WITTER DEAN DIVIDEND GROWTH SECURITIES INC
497, 1996-05-02
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<PAGE>
              PROSPECTUS
              APRIL 29, 1996
 
              Dean Witter Dividend Growth Securities Inc. (the "Fund") is an
open-end, diversified management investment company whose investment objective
is to provide reasonable current income and long-term growth of income and
capital. The Fund invests primarily in common stock of companies with a record
of paying dividends and the potential for increasing dividends. (See "Investment
Objective and Policies.")
 
               Shares of the Fund are continuously offered at net asset value.
However, redemptions and/or repurchases are subject in most circumstances to a
contingent deferred sales charge, scaled down from 5% to 1% of the amount
redeemed, if made within six years of purchase, which charge will be paid to the
Fund's Distributor, Dean Witter Distributors Inc. See "Redemptions and
Repurchases--Contingent Deferred Sales Charge." In addition, the Fund pays the
Distributor a distribution fee pursuant to a Plan of Distribution at the annual
rate of 1% of the lesser of the (i) average daily aggregate net sales since
inception of the Plan of Distribution or (ii) average daily net assets of the
Fund attributable to shares issued since inception of the Plan of Distribution.
See "Purchase of Fund Shares-- Plan of Distribution."
 
               This Prospectus sets forth concisely the information you should
know before investing in the Fund. It should be read and retained for future
reference. Additional information about the Fund is contained in the Statement
of Additional Information, dated April 29, 1996, which has been filed with the
Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed on this page. The
Statement of Additional Information is incorporated herein by reference.
 
     DEAN WITTER DISTRIBUTORS INC.
      DISTRIBUTOR
 
      TABLE OF CONTENTS
 
Prospectus Summary/2
Summary of Fund Expenses/3
Financial Highlights/4
The Fund and its Management/5
Investment Objective and Policies/5
  Risk Considerations and
   Investment Practices/6
Investment Restrictions/9
Purchase of Fund Shares/9
Shareholder Services/11
Redemptions and Repurchases/15
Dividends, Distributions and Taxes/17
Performance Information/18
Additional Information/18
 
SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR ENDORSED
BY, ANY BANK, AND THE SHARES ARE NOT FEDERALLY INSURED BY THE FEDERAL DEPOSIT
INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER AGENCY.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.
 
    Dean Witter
    Dividend Growth Securities Inc.
    Two World Trade Center
    New York, New York 10048
    (212) 392-2550 or
    (800) 869-NEWS (toll-free)
<PAGE>
PROSPECTUS SUMMARY
- --------------------------------------------------------------------------------
 
<TABLE>
<S>                 <C>
The                 The Fund, a Maryland corporation, is an open-end, diversified management investment company investing primarily
Fund                in common stock of companies with a record of paying dividends and the potential for increasing dividends.
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Shares Offered      Shares of common stock with $0.01 par value (see page 18).
- ------------------------------------------------------------------------------------------------------------------------------------
Offering            At net asset value without sales charge (see page 9). Shares redeemed within six years of purchase are subject
Price               to a contingent deferred sales charge under most circumstances (see page 15).
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Minimum             Minimum initial investment, $1,000; ($100 if the account is opened through EasyInvest-SM-); minimum subsequent
Purchase            investment, $100 (see page 9).
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Investment          The investment objective of the Fund is to provide reasonable current income and long-term growth of income and
Objective           capital.
- ------------------------------------------------------------------------------------------------------------------------------------
Investment          Dean Witter InterCapital Inc., ("InterCapital"), the Investment Manager of the Fund, and its wholly-owned
Manager             subsidiary, Dean Witter Services Company Inc., serve in various investment management, advisory, management and
                    administrative capacities to ninety-six investment companies and other portfolios with assets of approximately
                    $83.4 billion at March 31, 1996 (see page 5).
- ------------------------------------------------------------------------------------------------------------------------------------
Management          The Investment Manager receives a monthly fee at an annual rate of 0.625 of 1% of daily net assets, scaled down
Fee                 on assets over $250 million. The fee should not be compared with fees paid by other investment companies without
                    also considering applicable sales loads and distribution fees, including those noted below.
- ------------------------------------------------------------------------------------------------------------------------------------
Dividends and       Income dividends are paid quarterly; capital gains, if any, are distributed at least annually or retained for
Capital Gains       reinvestment by the Fund. Dividends and capital gains distributions are automatically reinvested in additional
Distributions       shares at net asset value unless the shareholder elects to receive cash (see page 17).
- ------------------------------------------------------------------------------------------------------------------------------------
Distributor and     Dean Witter Distributors Inc. (the "Distributor"). For its services as Distributor, which include payment of
Distribution Fee    sales commissions to account executives and various other promotional and sales-related expenses, the
                    Distributor receives from the Fund a distribution fee accrued daily and payable monthly at the rate of 1.0% per
                    annum of the lesser of (i) the Fund's average daily aggregate net sales of the Fund's shares since the inception
                    of a plan of distribution pursuant to Rule 12b-1 under the Investment Company Act of 1940, as amended (the
                    "Plan") or (b) the average daily net assets of the Fund attributable to shares issued, net of related shares
                    redeemed, since the inception of the Plan. This fee compensates the Distributor for the services provided in
                    distributing shares of the Fund and for sales related expenses. The Distributor also receives the proceeds of
                    any contingent deferred sales charges (see pages 10 and 11).
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Redemption--        At net asset value; redeemable involuntarily if total value of the account is less than $100, or, if the account
Contingent          was opened through EasyInvest-SM-, if after twelve months the shareholder has invested less than $1,000 in the
Deferred Sales      account. Although no commission or sales charge is imposed upon the purchase of shares, a contingent deferred
Charge              sales charge (scaled down from 5% to 1%) is imposed on any redemption of shares which causes the aggregate
                    current value of an account with the Fund to fall below the aggregate amount of the investor's purchase payments
                    made during the preceding six years. There is no charge imposed on redemption of shares purchased through
                    reinvestment of dividends or distributions (see page 12).
- ------------------------------------------------------------------------------------------------------------------------------------
Retirement          Investors can take advantage of tax benefits for personal retirement accounts by investing in the Fund through
Plans               an IRA (Individual Retirement Account) or Custodial Account under Section 403(b)(7) of the Internal Revenue Code
                    (see page 12).
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Risks               The net asset value of the Fund's shares will fluctuate with changes in market value of portfolio securities.
                    Dividends payable by the Fund will vary in relation to the amounts of dividends and interest earned on portfolio
                    securities. Investors should review the investment objective and policies of the Fund carefully and consider
                    their ability to assume the risks involved in purchasing shares of the Fund (see page 6).
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>
 
  THE ABOVE IS QUALIFIED IN ITS ENTIRETY BY THE DETAILED INFORMATION APPEARING
                          ELSEWHERE IN THE PROSPECTUS
                AND IN THE STATEMENT OF ADDITIONAL INFORMATION.
 
                                       2
<PAGE>
SUMMARY OF FUND EXPENSES
- --------------------------------------------------------------------------------
    The  following table illustrates all expenses and fees that a shareholder of
the Fund will incur. The  expenses and fees set forth  in the table are for  the
fiscal year ended February 29, 1996, except as otherwise noted.
 
<TABLE>
<S>                                                                             <C>
SHAREHOLDER TRANSACTION EXPENSES
- ---------------------------------------------------------------------------
Maximum Sales Charge Imposed on Purchases..................................     None
Maximum Sales Charge Imposed on Reinvested Dividends.......................     None
Deferred Sales Charge
  (as a percentage of the lesser of original purchase price or redemption
   proceeds)...............................................................     5.0%
      A contingent deferred sales charge is imposed at the following
      declining rates:
</TABLE>
 
<TABLE>
<CAPTION>
          YEAR SINCE PURCHASE                                                 PERCENTAGE OF
          PAYMENT MADE                                                       AMOUNT REDEEMED
          -----------------------------------------------------------------  ----------------
          <S>                                                                <C>
          First............................................................            5.0%
          Second...........................................................            4.0%
          Third............................................................            3.0%
          Fourth...........................................................            2.0%
          Fifth............................................................            2.0%
          Sixth............................................................            1.0%
          Seventh and thereafter...........................................        None
</TABLE>
 
<TABLE>
<S>                                                                             <C>
Redemption Fees............................................................       None
Exchange Fees..............................................................       None
ANNUAL FUND OPERATING EXPENSES (AS A PERCENTAGE OF AVERAGE NET ASSETS)
- ---------------------------------------------------------------------------
Management Fees............................................................      0.41%
12b-1 Fees*................................................................      0.79%
Other Expenses.............................................................      0.11%
Total Fund Operating Expenses..............................................      1.31%
<FN>
- ------------
*  A PORTION OF THE 12B-1  FEE WHICH MAY NOT EXCEED  0.25% OF THE FUND'S AVERAGE
  DAILY NET  ASSETS IS  CHARACTERIZED AS  A SERVICE  FEE WITHIN  THE MEANING  OF
  NATIONAL  ASSOCIATION OF SECURITIES DEALERS ("NASD") GUIDELINES (SEE "PURCHASE
  OF FUND SHARES").
</TABLE>
 
<TABLE>
<CAPTION>
EXAMPLE                                   1 year    3 years   5 years   10 years
- ----------------------------------------  -------   -------   -------   --------
<S>                                       <C>       <C>       <C>       <C>
You would pay the following expenses  on
 a  $1,000  investment, assuming  (1) 5%
 annual return and (2) redemption at the
 end of each time period:...............    $63       $72       $92       $158
You would pay the following expenses  on
 the   same   investment,   assuming  no
 redemption:............................    $13       $42       $72       $158
</TABLE>
 
    THE ABOVE  EXAMPLE SHOULD  NOT BE  CONSIDERED A  REPRESENTATION OF  PAST  OR
FUTURE  EXPENSES OR PERFORMANCE. ACTUAL EXPENSES AND  RETURNS OF THE FUND MAY BE
GREATER OR LESS THAN THOSE SHOWN.
 
    The purpose of  this table is  to assist the  investor in understanding  the
various  costs and expenses that  an investor in the  Fund will bear directly or
indirectly. For a  more complete description  of these costs  and expenses,  see
"The  Fund  and its  Management," "Plan  of  Distribution" and  "Redemptions and
Repurchases."
 
    Long-term shareholders  of  the Fund  may  pay  more in  sales  charges  and
distribution  fees than the  economic equivalent of  the maximum front-end sales
charge permitted by the NASD.
 
                                       3
<PAGE>
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
 
    The  following  ratios and  per  share data  for  a share  of  capital stock
outstanding throughout each period  have been audited  by Price Waterhouse  LLP,
independent  accountants. The financial highlights should be read in conjunction
with the financial statements  and notes thereto and  the unqualified report  of
independent  accountants  which are  contained  in the  Statement  of Additional
Information. Further information about the performance of the Fund is  contained
in  the  Fund's Annual  Report to  Stockholders, which  may be  obtained without
charge upon request to the Fund.
 
<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED FEBRUARY 28
                            ---------------------------------------------------------------------------------------------------
                              1996*      1995      1994      1993     1992*      1991      1990      1989     1988*      1987
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
<S>                         <C>        <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
PER SHARE OPERATING
 PERFORMANCE:
  Net asset value,
   beginning of period....      $31.16   $30.86    $28.70    $27.01    $23.50    $22.47    $20.32    $19.28    $20.63    $17.56
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
  Net investment income...        0.75     0.72      0.68      0.70      0.71      0.79      0.72      0.68      0.67      0.51
  Net realized and
   unrealized gain
   (loss).................        8.50     0.24      2.16      1.72      3.63      1.04      2.83      1.78     (0.99)     3.56
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
  Total from investment
   operations.............        9.25     0.96      2.84      2.42      4.34      1.83      3.55      2.46     (0.32)     4.07
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
  Less dividends and
   distributions from:
    Net investment
     income...............       (0.67)    (0.66)    (0.68)    (0.69)    (0.76)    (0.80)    (0.76)    (0.62)    (0.73)    (0.52)
    Net realized gain.....       (0.09)       --       --     (0.04)    (0.07)       --     (0.64)    (0.80)    (0.30)    (0.48)
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
  Total dividends and
   distributions..........       (0.76)    (0.66)    (0.68)    (0.73)    (0.83)    (0.80)    (1.40)    (1.42)    (1.03)    (1.00)
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
  Net asset value, end of
   period.................      $39.65   $31.16    $30.86    $28.70    $27.01    $23.50    $22.47    $20.32    $19.28    $20.63
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
                            ---------- --------  --------  --------  --------  --------  --------  --------  --------  --------
TOTAL INVESTMENT
 RETURN+..................      30.01%    3.25%     9.98%     9.13%    18.82%     8.51%    17.85%    13.26%   (1.40)%    23.96%
RATIOS TO AVERAGE NET
 ASSETS:
  Expenses................       1.31%    1.42%     1.37%     1.40%     1.42%     1.51%     1.41%     1.55%     1.55%     1.52%
  Net investment income...       2.14%    2.42%     2.31%     2.67%     2.91%     3.62%     3.46%     3.44%     3.47%     3.35%
SUPPLEMENTAL DATA:
  Net assets, end of
   period, in millions....      $9,782   $7,101    $6,712    $5,386    $4,071    $3,015    $2,760    $1,860    $1,824    $1,652
  Portfolio turnover
   rate...................         10%       6%       13%        8%        5%        5%        3%        8%        7%       12%
</TABLE>
 
- ------------
* YEAR ENDED FEBRUARY 29.
+ DOES NOT REFLECT THE DEDUCTION OF SALES CHARGE.
 
                                       4
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
    Dean Witter Dividend  Growth Securities  Inc. (the "Fund")  is an  open-end,
diversified  management investment company incorporated  in Maryland on December
22, 1980.
 
    Dean Witter InterCapital Inc. ("InterCapital" or the "Investment  Manager"),
whose address is Two World Trade Center, New York, New York 10048, is the Fund's
investment  manager.  The Investment  Manager, which  was incorporated  in July,
1992, is a wholly-owned  subsidiary of Dean Witter,  Discover & Co. ("DWDC"),  a
balanced  financial services organization providing  a broad range of nationally
marketed credit and investment products.
 
    InterCapital and its wholly-owned  subsidiary, Dean Witter Services  Company
Inc.,   serve  in  various  investment   management,  advisory,  management  and
administrative capacities to  ninety-six investment companies,  thirty of  which
are  listed  on the  New  York Stock  Exchange,  with combined  total  assets of
approximately $80.7  billion at  March  31, 1996.  The Investment  Manager  also
manages  portfolios of pension  plans, other institutions  and individuals which
aggregated approximately $2.7 billion at such date.
 
    The Fund  has  retained the  Investment  Manager to  provide  administrative
services, manage its busi-
 
ness  affairs  and manage  the investment  of the  Fund's assets,  including the
placing  of  orders  for  the   purchase  and  sale  of  portfolio   securities.
InterCapital  has  retained Dean  Witter Services  Company  Inc. to  perform the
aforementioned administrative  services  for  the  Fund.  The  Fund's  Board  of
Directors  reviews the  various services provided  by the  Investment Manager to
ensure that  the  Fund's general  investment  policies and  programs  are  being
properly  carried out and that administrative services are being provided to the
Fund in a satisfactory manner.
 
    As full compensation for the services  and facilities furnished to the  Fund
and  for expenses of the  Fund assumed by the  Investment Manager, the Fund pays
the Investment Manager monthly compensation  calculated daily at an annual  rate
of 0.625% of the daily net assets of the Fund up to $250 million, scaled down at
various asset levels to 0.325% on assets over $8 billion. Effective May 1, 1996,
the  Investment Manager's  compensation will be  scaled down to  0.30% on assets
over $10 billion. For the fiscal year ended February 29, 1996, the Fund  accrued
total  compensation to the  Investment Manager amounting to  0.41% of the Fund's
average daily net assets and the Fund's total expenses amounted to 1.31% of  the
Fund's average daily net assets.
 
INVESTMENT OBJECTIVE AND POLICIES
- --------------------------------------------------------------------------------
 
    The investment objective of the Fund is to provide reasonable current income
and  long-term growth of  income and capital. This  objective is fundamental and
may not be changed without shareholder approval. There is no assurance that  the
objective  will be achieved. The Fund  seeks to achieve its investment objective
primarily through investments  in common  stock of  companies with  a record  of
paying  dividends and the potential for increasing dividends. Net asset value of
the Fund's shares  will fluctuate  with changes  in market  values of  portfolio
securities.  The Fund will attempt to avoid speculative securities or those with
speculative characteristics.
 
SPECIFIC INVESTMENT POLICIES
 
    The  Fund  has  adopted  the  following  specific  policies  which  are  not
fundamental  investment policies and which may be changed by the Fund's Board of
Directors:
 
   (1) Up to 30% of the value of the Fund's total assets may be invested in: (a)
convertible debt securities, convertible  preferred securities, U.S.  Government
securities  (securities issued or guaranteed as to principal and interest by the
United States or its agencies and instrumentalities), investment grade corporate
debt securities and/or  money market  instruments when,  in the  opinion of  the
Invest-
 
                                       5
<PAGE>
ment  Manager, the  projected total  return on  such securities  is equal  to or
greater than  the  expected total  return  on  equity securities  or  when  such
holdings  might  be expected  to  reduce the  volatility  of the  portfolio (for
purposes of this provision, the term "total return" means the difference between
the cost of a security and the aggregate of its market value and income earned);
or (b)  in money  market instruments  under any  one or  more of  the  following
circumstances:  (i) pending investment of proceeds of  sale of Fund shares or of
portfolio  securities;  (ii)  pending  settlement  of  purchases  of   portfolio
securities;   or  (iii)  to  maintain  liquidity  for  the  purpose  of  meeting
anticipated redemptions.
 
   (2) Notwithstanding any  of the  foregoing limitations, the  Fund may  invest
more  than 30%  of its  total assets  in money  market instruments  to maintain,
temporarily, a  "defensive"  posture when,  in  the opinion  of  the  Investment
Manager, it is advisable to do so because of economic or market conditions.
 
    The foregoing limitations will apply at the time of acquisition based on the
last  determined  value  of the  Fund's  assets.  Any subsequent  change  in any
applicable percentage resulting from  fluctuations in value  or other change  in
total  assets will not  require elimination of any  security from the portfolio.
The Fund may purchase securities on a when-issued or delayed delivery basis, may
purchase or  sell securities  on a  forward commitment  basis and  may  purchase
securities on a "when, as and if issued" basis.
 
REPURCHASE AGREEMENTS
 
    The Fund may enter into repurchase agreements, which may be viewed as a type
of  secured lending by the Fund, and  which typically involve the acquisition by
the Fund of government securities or  other securities from a selling  financial
institution  such as a bank, savings  and loan association or broker-dealer. The
agreement provides that the Fund will sell back to the institution, and that the
institution will repurchase, the underlying security at a specified price and at
a fixed time in the  future, usually not more than  seven days from the date  of
purchase.
 
RISK CONSIDERATIONS AND INVESTMENT PRACTICES
 
    AMERICAN DEPOSITORY RECEIPTS.  The Fund may invest in ADRs. These securities
may  not necessarily be denominated in the  same currency as the securities into
which they may  be converted.  ADRs are receipts  typically issued  by a  United
States bank or trust company evidencing ownership of the underlying securities.
 
    INVESTMENTS  IN SECURITIES RATED BAA BY MOODY'S OR BBB BY S&P.  The Fund may
invest a portion of their assets in fixed-income securities rated at the time of
purchase Baa or better by Moody's Investors Service, Inc. ("Moody's") or BBB  or
better  by Standard  & Poor's  Corporation ("S&P").  Investments in fixed-income
securities rated either Baa by Moody's or BBB by S&P (the lowest credit  ratings
designated   "investment  grade")  may  have  speculative  characteristics  and,
therefore, changes in economic conditions or other circumstances are more likely
to weaken their capacity to make  principal and interest payments than would  be
the  case with investments in  securities with higher credit  ratings. If a bond
held by the Fund is downgraded by a rating agency to a rating below Baa or  BBB,
the Fund will retain such security in its portfolio until the Investment Manager
determines  that it is practicable to sell  the security without undue market or
tax consequences  to the  Fund. In  the event  that such  downgraded  securities
constitute  5% or more of the Fund's assets, the Investment Manager will seek to
sell immediately sufficient securities to reduce the total to below 5%.
 
    INVESTMENTS IN FIXED-INCOME SECURITIES.   The Fund may  invest a portion  of
its  assets in fixed-income securities.  All fixed-income securities are subject
to two types of risks:  the credit risk and the  interest rate risk. The  credit
risk relates to the ability of the issuer to meet interest or principal payments
or both as they come due. Generally, higher yielding fixed-income securities are
subject  to a credit risk  to a greater extent  than lower yielding fixed-income
securities. The interest rate risk refers
 
                                       6
<PAGE>
to the fluctuations  in the  net asset value  of any  portfolio of  fixed-income
securities  resulting from the  inverse relationship between  price and yield of
fixed-income securities;  that is,  when  the general  level of  interest  rates
rises,  the prices of outstanding fixed-income securities generally decline, and
when interest rates fall, prices generally rise.
 
    CONVERTIBLE SECURITIES.   The Fund  may invest a  portion of  its assets  in
convertible  securities.  A convertible  security  is a  bond,  debenture, note,
preferred stock or other security that may be converted into or exchanged for  a
prescribed  amount of common  stock of the  same or a  different issuer within a
particular  period  of  time  at  a  specified  price  or  formula.  Convertible
securities  rank senior  to common stocks  in a  corporation's capital structure
and, therefore, entail less risk than the corporation's common stock. The  value
of  a convertible security is a function of its "investment value" (its value as
if it did  not have  a conversion privilege),  and its  "conversion value"  (the
security's  worth if  it were  to be exchanged  for the  underlying security, at
market value, pursuant to its conversion privilege).
 
    To the extent that a convertible security's investment value is greater than
its conversion  value,  its  price  will  be  primarily  a  reflection  of  such
investment  value and its price  will be likely to  increase when interest rates
fall and decrease when interest rates rise, as with a fixed-income security (the
credit standing of the issuer and other  factors may also have an effect on  the
convertible  security's value). If  the conversion value  exceeds the investment
value, the price  of the  convertible security  will rise  above its  investment
value  and, in addition,  will sell at  some premium over  its conversion value.
(This premium  represents  the  price  investors are  willing  to  pay  for  the
privilege  of purchasing a  fixed-income security with  a possibility of capital
appreciation due to the  conversion privilege.) At such  times the price of  the
convertible  security  will tend  to fluctuate  directly with  the price  of the
underlying equity security.
 
    Because of the special nature of  the Fund's permitted investments in  lower
rated convertible
securities,  the  Investment  Manager  must  take  account  of  certain  special
considerations in  assessing the  risks associated  with such  investments.  The
prices of lower rated securities have been found to be less sensitive to changes
in prevailing interest rates than higher rated investments, but are likely to be
more sensitive to adverse economic changes or individual corporate developments.
During  an economic  downturn or  substantial period  of rising  interest rates,
highly leveraged issuers may experience  financial stress which would  adversely
affect   their  ability  to   service  their  principal   and  interest  payment
obligations, to  meet their  projected business  goals or  to obtain  additional
financing. If the issuer of a lower rated convertible security owned by the Fund
defaults,  the Fund may incur additional expenses to seek recovery. In addition,
periods of  economic uncertainty  and change  can be  expected to  result in  an
increased   volatility  of  market  prices  of  lower  rated  securities  and  a
corresponding volatility in the net asset value of a share of the Fund.
 
    REPURCHASE AGREEMENTS.   While repurchase agreements  involve certain  risks
not  associated with  direct investments  in debt  securities, the  Fund follows
procedures designed to minimize such  risks. These procedures include  effecting
repurchase  transactions only with  large, well-capitalized and well-established
financial institutions whose financial  condition will be continually  monitored
by  the Investment Manager. In addition,  the value of the collateral underlying
the repurchase  agreement  will be  at  least  equal to  the  repurchase  price,
including  any accrued interest earned on the repurchase agreement. In the event
of a default  or bankruptcy by  a selling financial  institution, the Fund  will
seek  to liquidate such collateral. However,  the exercising of the Fund's right
to liquidate such collateral could involve  certain costs or delays and, to  the
extent  that  proceeds  from  any  sale upon  a  default  of  the  obligation to
repurchase were less than the repurchase price, the Fund could suffer a loss. It
is the current policy of the Fund not to invest in repurchase agreements that do
not mature within  seven days if  any such investment,  together with any  other
illiquid
 
                                       7
<PAGE>
assets held by the Fund, amounts to more than 15% of its net assets.
 
    ZERO  COUPON SECURITIES.  A portion of the fixed-income securities purchased
by the Fund may be  zero coupon securities. Such  securities are purchased at  a
discount from their face amount, giving the purchaser the right to receive their
full  value at maturity. The interest  earned on such securities is, implicitly,
automatically compounded and paid out at  maturity. While such compounding at  a
constant rate eliminates the risk of receiving lower yields upon reinvestment of
interest  if  prevailing interest  rates  decline, the  owner  of a  zero coupon
security will be  unable to participate  in higher yields  upon reinvestment  of
interest  received on  interest-paying securities  if prevailing  interest rates
rise.
 
    A zero  coupon security  pays no  interest to  its holder  during its  life.
Therefore, to the extent the Fund invests in zero coupon securities, it will not
receive  current cash available  for distribution to  shareholders. In addition,
zero coupon securities are subject  to substantially greater price  fluctuations
during  periods  of  changing  prevailing  interest  rates  than  are comparable
securities which  pay interest  on  a current  basis.  Current federal  tax  law
requires  that a holder  (such as the Fund)  of a zero  coupon security accrue a
portion of the discount at which the security was purchased as income each  year
even  though the  Fund receives  no interest  payments in  cash on  the security
during the year.
 
    INVESTMENT IN REAL  ESTATE INVESTMENT TRUSTS.  The Fund may  invest in  real
estate  investment trusts, which pool investors' funds for investments primarily
in commercial  real  estate properties.  Investment  in real  estate  investment
trusts  may be the most practical available means  for the Fund to invest in the
real estate  industry (the  Fund is  prohibited from  investing in  real  estate
directly).  As a shareholder in  a real estate investment  trust, the Fund would
bear its ratable share of the real estate investment trust's expenses, including
its advisory and administration fees. At  the same time the Fund would  continue
to  pay its  own investment management  fees and  other expenses as  a result of
which the Fund and its stockholders in effect will be absorbing duplicate levels
of fees with respect to investments in real estate investment trusts.
 
    For additional risk  disclosure, please refer  to the "Investment  Objective
and  Policies" section  of the Prospectus  and to the  "Investment Practices and
Policies" section of the Statement of Additional Information.
 
PORTFOLIO MANAGEMENT
 
    The Fund's portfolio is  actively managed by its  Investment Manager with  a
view  to  achieving  the  Fund's  investment  objective.  In  determining  which
securities to  purchase  for the  Fund  or hold  in  the Fund's  portfolio,  the
Investment  Manager  will rely  on information  from various  sources, including
research, analysis and appraisals of brokers and dealers, including Dean  Witter
Reynolds  Inc. ("DWR"), a broker-dealer affiliate  of InterCapital, the views of
Directors of the Fund  and others regarding  economic developments and  interest
rate  trends,  and the  Investment Manager's  own analysis  of factors  it deems
relevant. The  Fund's  portfolio is  managed  within InterCapital's  Growth  and
Income   Group,  which  manages  20  equity   funds  and  fund  portfolios  with
approximately $20.3  billion in  assets as  of March  31, 1996.  Paul D.  Vance,
Senior  Vice President of InterCapital and a member of InterCapital's Growth and
Income Group,  has been  the primary  portfolio manager  of the  Fund since  its
inception and has been a portfolio manager at InterCapital for over five years.
 
    Although  the Fund  does not engage  in substantial short-term  trading as a
means of achieving its  investment objective, it  may sell portfolio  securities
without regard to the length of time they have been held, in accordance with the
investment  policies described earlier.  Pursuant to an  order of the Securities
and Exchange Commission, the Fund  may effect principal transactions in  certain
money  market instruments  with DWR. In  addition, the Fund  may incur brokerage
commissions on transactions conducted through DWR.
 
                                       8
<PAGE>
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    The investment restrictions  listed below are  among the restrictions  which
have  been adopted  by the  Fund as  fundamental policies.  Under the Investment
Company Act of 1940,  as amended (the  "Act"), a fundamental  policy may not  be
changed  without the vote of a majority  of the outstanding voting securities of
the Fund, as defined in the Act. For purposes of the following limitations:  (i)
all  percentage  limitations  apply  immediately  after  a  purchase  or initial
investment;  and  (ii)  any  subsequent  change  in  any  applicable  percentage
resulting  from market fluctuations or other changes in total or net assets does
not require elimination of any security from the portfolio.
 
    The Fund may not:
 
   1. Invest more than 5% of the value of its total assets in the securities  of
any one issuer (other than obligations issued or guaranteed by the United States
Government, its agencies or instrumentalities).
 
   2.  Purchase more than 10% of all  outstanding voting securities or any class
of securities of any one issuer.
 
   3. Invest more than  25% of the  value of its total  assets in securities  of
issuers in any one industry. This restriction does not apply to bank obligations
or  obligations  issued or  guaranteed by  the United  States Government  or its
agencies or instrumentalities.
 
   4. Invest more  than 5% of  the value of  its total assets  in securities  of
issuers having a record, together with predecessors, of less than three years of
continuous  operation. This restriction shall not apply to any obligation issued
or   guaranteed   by   the   United   States   Government,   its   agencies   or
instrumentalities.
 
PURCHASE OF FUND SHARES
- --------------------------------------------------------------------------------
 
    The  Fund offers its  shares for sale  to the public  on a continuous basis.
Pursuant  to  a  Distribution  Agreement  between  the  Fund  and  Dean   Witter
Distributors Inc. (the "Distributor"), shares of the Fund are distributed by the
Distributor  and offered by DWR and others who have entered into selected dealer
agreements with  the  Distributor  ("Selected  Broker-Dealers").  The  principal
executive  office of the Distributor  is located at Two  World Trade Center, New
York, New York 10048.
 
    The minimum initial purchase is $1,000. Subsequent purchases of $100 or more
may be  made  by  sending  a  check, payable  to  Dean  Witter  Dividend  Growth
Securities Inc., directly to Dean Witter Trust Company (the "Transfer Agent") at
P.O.  Box 1040, Jersey City,  NJ 07303 or by  contacting an account executive of
DWR or other Selected Broker-Dealer. The minimum initial purchase in the case of
investments through EasyInvest-SM-, an automatic purchase plan (see "Shareholder
Services"), is $100, provided  that the schedule  of automatic investments  will
result  in investments totalling at least $1,000 within the first twelve months.
In the  case  of investments  pursuant  to Systematic  Payroll  Deduction  Plans
(including Individual Retirement Plans), the Fund, in its discretion, may accept
investments  without  regard to  any minimum  amounts  which would  otherwise be
required, if the  Fund has reason  to believe that  additional investments  will
increase the investment in each account under such Plans to at least $1,000. The
Fund  will waive the minimum purchase  requirement for investments in connection
with certain Unit Investment Trusts. Certificates for shares purchased will  not
be issued unless requested by the shareholder in writing to the Transfer Agent.
 
    Shares  of the  Fund are  sold through  the Distribution  on a  normal three
business day settlement basis; that is, payment is due on the third business day
(settlement date) after the order is placed with the Distributor. Shares of  the
Fund   purchased  through  the   Distributor  are  entitled   to  any  dividends
 
                                       9
<PAGE>
declared beginning on the next business day following settlement date. Since DWR
and other Selected Broker-Dealers forward  investors' funds on settlement  date,
they  will benefit from the temporary use of  the funds if payment is made prior
thereto. Shares purchased through the  Transfer Agent are entitled to  dividends
beginning  on the  next business  day following  receipt of  an order.  As noted
above, orders placed  directly with the  Transfer Agent must  be accompanied  by
payment.
 
    The  offering price will  be the net  asset value per  share next determined
following receipt of  an order. While  no sales  charge is imposed  at the  time
shares  are purchased, a contingent deferred sales  charge may be imposed at the
time of  redemption (see  "Redemptions and  Repurchases"). Sales  personnel  are
compensated  for selling shares of the  Trust by the Distributor and/or Selected
Broker-Dealer. In addition, some sales  personnel of the Selected  Broker-Dealer
will receive various types of non-cash compensation as special sales incentives,
including  trips, educational and/or business seminars and merchandise. The Fund
and the Distributor reserve the right to reject any purchase orders.
 
PLAN OF DISTRIBUTION
 
    The Fund has adopted  a Plan of Distribution,  pursuant to Rule 12b-1  under
the Act (the "Plan"), under which the Fund will pay the Distributor a fee, which
is  accrued daily and payable  monthly, at an annual rate  of 1.0% of the lesser
of: (a) the average daily aggregate gross  sales of the Fund's shares since  the
inception  of the Plan on July 2, 1984 (not including reinvestments of dividends
or capital  gains distributions),  less the  average daily  aggregate net  asset
value  of the  Fund's shares  redeemed since the  Plan's inception  upon which a
contingent deferred sales charge has been imposed or waived; or (b) the  average
daily  net assets  of the  Fund attributable  to shares  issued, net  of related
shares redeemed, since inception of the Plan. This fee is treated by the Fund as
an expense in the year it is accrued.  A portion of the fee payable pursuant  to
the   Plan,  equal  to  0.25%  of  the  Fund's  average  daily  net  assets,  is
characterized as  a service  fee  within the  meaning  of NASD  guidelines.  The
service  fee is a  payment made for  personal service and/or  the maintenance of
shareholder accounts.
 
    Amounts paid under the Plan are paid to the Distributor to compensate it for
the services provided and  the expenses borne by  the Distributor and others  in
the  distribution of the Fund's shares, including the payment of commissions for
sales of the  Fund's shares and  incentive compensation to  and expenses of  DWR
account executives and others who engage in or support distribution of shares or
who  service shareholder  accounts, including  overhead and  telephone expenses;
printing and distribution of  prospectuses and reports  used in connection  with
the  offering  of the  Fund's  shares to  other  than current  shareholders; and
preparation, printing  and  distribution  of sales  literature  and  advertising
materials.  In addition, the  Distributor may utilize fees  paid pursuant to the
Plan to compensate DWR and  other Selected Broker-Dealers for their  opportunity
costs  in advancing such amounts,  which compensation would be  in the form of a
carrying charge on any unreimbursed expenses incurred.
 
    For the fiscal year ended February 29, 1996, the Fund accrued payments under
the Plan amounting to $66,486,095, which amount is equal to 0.79% of the  Fund's
average  daily net assets  for the fiscal  year. The payments  accrued under the
Plan were calculated pursuant  to clause (a) of  the compensation formula  under
the Plan.
 
    At  any given time,  expenses in distributing  shares of the  Fund may be in
excess of the total of (i) the payments  made by the Fund pursuant to the  Plan,
and  (ii) the  proceeds of contingent  deferred sales charges  paid by investors
upon the  redemption of  shares  (see "Redemptions  and  Repurchases--Contingent
Deferred  Sales Charge"). For example, if the Distributor incurred $1 million in
expenses in distributing shares  of the Fund and  $750,000 had been received  by
the  Distributor as described  in (i) and  (ii) above, the  excess expense would
amount to $250,000. The Distributor has
 
                                       10
<PAGE>
advised the Fund that the  excess distribution expenses, including the  carrying
charge  described  above,  totalled  $185,746,988 at  February  29,  1996, which
equalled 1.90% of the Fund's net assets at such date.
 
    Because there  is no  requirement under  the Plan  that the  Distributor  be
reimbursed  for all its expenses  or any requirement that  the Plan be continued
from year to year,  this excess amount  does not constitute  a liability of  the
Fund.  Although  there is  no  legal obligation  for  the Fund  to  pay expenses
incurred by the Distributor in excess of payments made to the Distributor  under
the  Plan, if for any reason the Plan is terminated, the Directors will consider
at that time the manner in which to treat such expenses. Any cumulative expenses
incurred by the Distributor, but not yet recovered through distribution fees  or
contingent  deferred sales charges,  may or may not  be recovered through future
distribution fees or contingent deferred sales charges.
 
DETERMINATION OF NET ASSET VALUE
 
    The net asset value per share of  the Fund is determined once daily at  4:00
p.m.,  New York time (or, on days when  the New York Stock Exchange closes prior
to 4:00  p.m., at  such earlier  time),  on each  day that  the New  York  Stock
Exchange  is open by taking the value of all assets of the Fund, subtracting all
its liabilities, dividing by the number  of shares outstanding and adjusting  to
the  nearest cent. The net asset value per  share will not be determined on Good
Friday and on such other federal and non-federal holidays as are observed by the
New York Stock Exchange.
 
    In the calculation of  the Fund's net asset  value: (1) an equity  portfolio
security  listed or traded on  the New York or  American Stock Exchange or other
stock exchange or quoted by  NASDAQ is valued at its  latest sale price on  that
exchange  or quotation service; if there were no sales that day, the security is
valued at the latest bid price (in cases where a security is traded on more than
one exchange, the security is valued  on the exchange designated as the  primary
market  pursuant  to procedures  adopted  by the  Trustees);  and (2)  all other
portfolio securities for  which over-the-counter market  quotations are  readily
available  are valued at  the latest bid  price. When market  quotations are not
readily available, including circumstances under  which it is determined by  the
Investment  Manager that sale and bid prices  are not reflective of a security's
market value, portfolio securities are valued at their fair value as  determined
in  good faith under procedures established by and under the general supervision
of  the  Fund's  Directors  (valuation  of  debt  securities  for  which  market
quotations  are not readily available may be based upon current market prices of
securities which are comparable in coupon, rating and maturity or an appropriate
matrix utilizing similar factors).
 
    Short-term debt securities with remaining  maturities of sixty days or  less
at  the time  of purchase  are valued  at amortized  cost, unless  the Directors
determine such does  not reflect  the securities'  market value,  in which  case
these  securities  will be  valued  at their  fair  value as  determined  by the
Directors.
 
    Certain securities  in the  Fund's portfolio  may be  valued by  an  outside
pricing  service  approved  by the  Fund's  Directors. The  pricing  service may
utilize a matrix system incorporating  security quality, maturity and coupon  as
the  evaluation  model parameters,  and/or  research evaluations  by  its staff,
including review of broker-dealer market  price quotations, in determining  what
it  believes is the  fair valuation of  the portfolio securities  valued by such
pricing service.
 
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
    AUTOMATIC INVESTMENT OF DIVIDENDS AND  DISTRIBUTIONS.  All income  dividends
and  capital gains distributions  are automatically paid  in full and fractional
shares of the Fund (or, if specified by the
 
                                       11
<PAGE>
shareholder, any other open-end investment company for which InterCapital serves
as investment manager [collectively, with  the Fund, the "Dean Witter  Funds"]),
unless  the shareholder requests that  they be paid in  cash. Shares so acquired
are not subject  to the imposition  of a contingent  deferred sales charge  upon
their redemption (see "Redemptions and Repurchases").
 
    EASYINVEST.-SM-    Shareholders may  subscribe  to EasyInvest,  an automatic
purchase plan  which  provides  for  any  amount  from  $100  to  $5,000  to  be
transferred automatically from a checking or savings account, on a semi-monthly,
monthly  or quarterly basis, to  the Transfer Agent for  investment in shares of
the Fund (see "Purchase of Fund Shares"
and "Redemptions and Repurchases--Involuntary Redemption").
 
    INVESTMENT OF DIVIDENDS AND DISTRIBUTIONS RECEIVED IN CASH.  Any shareholder
who  receives  a  cash  payment   representing  a  dividend  or  capital   gains
distribution may invest such dividend or distribution at the net asset value per
share  next determined  after receipt  by the  Transfer Agent,  by returning the
check or the proceeds to the Transfer Agent within thirty days after the payment
date. Shares  so acquired  are not  subject to  the imposition  of a  contingent
deferred sales charge upon their redemption (see "Redemptions and Repurchases.")
 
    SYSTEMATIC  WITHDRAWAL PLAN.  A  systematic withdrawal plan (the "Withdrawal
Plan") is available  for shareholders  who own or  purchase shares  of the  Fund
having  a minimum value of $10,000 based  upon the then current net asset value.
The Withdrawal Plan provides  for monthly or  quarterly (March, June,  September
and  December)  checks  in  any amount,  not  less  than $25,  or  in  any whole
percentage of  the  account balance,  on  an annualized  basis.  Any  applicable
contingent  deferred sales charge  will be imposed on  shares redeemed under the
Withdrawal Plan  (See "Redemptions  and Repurchases--Contingent  Deferred  Sales
Charge").  Therefore, any shareholder participating  in the Withdrawal Plan will
have sufficient shares  redeemed from his  or her account  so that the  proceeds
(net of any applicable contingent deferred sales charge) to the shareholder will
be the designated monthly or quarterly amount.
 
    Withdrawal  Plan payments should  not be considered  as dividends, yields or
income. If periodic withdrawal plan payments continuously exceed net  investment
income  and net  capital gains,  the shareholder's  original investment  will be
correspondingly reduced and ultimately exhausted.
 
    Each withdrawal constitutes  a redemption  of shares  and any  gain or  loss
realized  must  be  recognized for  Federal  income tax  purposes.  Although the
shareholder may  make  additional  investments  of  $2,500  or  more  under  the
Withdrawal  Plan,  withdrawals made  concurrently  with purchases  of additional
shares may  be  inadvisable because  of  the contingent  deferred  sales  charge
applicable  to the redemption of shares purchased during the preceding six years
(see "Redemptions and Repurchases--Contingent Deferred Sales Charge").
 
    Shareholders wishing to enroll in  the Withdrawal Plan should contact  their
account executive or the Transfer Agent.
 
    TAX  SHELTERED RETIREMENT PLANS.  Retirement plans are available through DWR
for use  by  corporations,  the self-employed,  eligible  Individual  Retirement
Accounts  and Custodial Accounts under Section 403(b)(7) of the Internal Revenue
Code. Adoption  of such  plans  should be  on advice  of  legal counsel  or  tax
adviser.
 
    For  further information  regarding plan administration,  custodial fees and
other details,  investors should  contact their  DWR or  other Selected  Broker-
Dealer account executive or the Transfer Agent.
 
EXCHANGE PRIVILEGE
 
    The  Fund  makes  available  to  its  shareholders  an  "Exchange Privilege"
allowing the exchange  of shares of  the Fund  for shares of  other Dean  Witter
Funds sold with a contingent deferred sales charge ("CDSC funds"), for shares of
Dean Witter Short-
 
                                       12
<PAGE>
Term  U.S. Treasury Trust, Dean Witter Limited Term Municipal Trust, Dean Witter
Intermediate Term U.S. Treasury  Trust, Dean Witter  Short-Term Bond Fund,  Dean
Witter  Balanced Income Fund, Dean Witter Balanced  Growth Fund and of five Dean
Witter Funds which are money market  funds (the foregoing eleven non-CDSC  funds
are  hereinafter referred  to as  the "Exchange  Funds"). Exchanges  may be made
after the shares of the Fund acquired  by purchase (not by exchange or  dividend
reinvestment)  have been held  for thirty days.  There is no  waiting period for
exchanges of shares acquired by exchange or dividend reinvestment.
 
    An exchange to another CDSC  fund or any Exchange Fund  that is not a  money
market  fund is on the basis of the next calculated net asset value per share of
each fund after  the exchange order  is received. When  exchanging into a  money
market  fund from the Fund, shares  of the Fund are redeemed  out of the Fund at
their next calculated  net asset value  and the proceeds  of the redemption  are
used  to  purchase shares  of the  money market  fund at  their net  asset value
determined the following business day.  Subsequent exchanges between any of  the
money  market funds and any of the CDSC funds can be effected on the same basis.
No contingent  deferred sales  charge ("CDSC")  is imposed  at the  time of  any
exchange, although any applicable CDSC will be imposed upon ultimate redemption.
Shares of the Fund acquired in exchange for shares of another CDSC fund having a
different  CDSC schedule  than that  of this  Fund will  be subject  to the CDSC
schedule of this  Fund, even if  such shares are  subsequently re-exchanged  for
shares  of the  CDSC fund  originally purchased. During  the period  of time the
shareholder remains in the  Exchange Fund (calculated from  the last day of  the
month  in which the Exchange Fund shares were acquired), the holding period (for
the purpose of determining the rate of the CDSC) is frozen. If those shares  are
subsequently  reexchanged  for  shares  of  a  CDSC  fund,  the  holding  period
previously frozen when the first  exchange was made resumes  on the last day  of
the month in which shares of a CDSC fund are reacquired. Thus, the CDSC is based
upon  the time (calculated as described above) the shareholder was invested in a
CDSC fund (see "Redemptions and Repurchases--Contingent Deferred Sales Charge").
However, in the case of shares exchanged into an Exchange Fund on or after April
23, 1990, upon a redemption of shares  which results in a CDSC being imposed,  a
credit  (not to exceed the amount of the  CDSC) will be given in an amount equal
to the the Exchange Fund 12b-1 distribution fees incurred on or after that  date
which  are attributable to those shares.  (Exchange fund 12b-1 distribution fees
are described in the prospectuses for those funds.)
 
    In addition, shares of the  Fund may be acquired  in exchange for shares  of
Dean  Witter Funds sold  with a front-end sales  charge ("front-end sales charge
funds"), but shares  of the  Fund, however acquired,  may not  be exchanged  for
shares  of  front-end sales  charge funds.  Shares  of a  CDSC fund  acquired in
exchange for shares of a front-end sales charge fund (or in exchange for  shares
of  other Dean Witter  Funds for which  shares of a  front-end sales charge fund
have been exchanged) are not subject to any CDSC upon their redemption.
 
    Purchases and  exchanges should  be  made for  investment purposes  only.  A
pattern  of frequent  exchanges may  be deemed by  the Investment  Manager to be
abusive and contrary to the best interests of the Fund's other shareholders and,
at the Investment Manager's discretion, may be limited by the Fund's refusal  to
accept  additional purchases and/  or exchanges from  the investor. Although the
Fund does not  have any  specific definition of  what constitutes  a pattern  of
frequent  exchanges,  and  will  consider all  relevant  factors  in determining
whether a particular situation is abusive and contrary to the best interests  of
the Fund and its other shareholders, investors should be aware that the Fund and
each  of the other Dean Witter Funds  may in their discretion limit or otherwise
restrict the number  of times this  Exchange Privilege may  be exercised by  any
investor.  Any such restriction will be made  by the Fund on a prospective basis
only, upon notice to
 
                                       13
<PAGE>
the shareholder not later than ten days following such shareholder's most recent
exchange.
 
    The Exchange Privilege may be terminated or revised at any time by the  Fund
and/or  any  of such  Dean Witter  Funds for  which  shares of  the Fund  may be
exchanged, upon  such  notice  as  may  be  required  by  applicable  regulatory
agencies.  Shareholders maintaining margin accounts with DWR or another Selected
Broker-Dealer are referred to their account executive regarding restrictions  on
exchange of shares of the Fund pledged in the margin account.
 
    The  current prospectus for each  fund describes its investment objective(s)
and policies, and shareholders should obtain one and examine it carefully before
investing. Exchanges are subject to  the minimum investment requirement and  any
other  conditions imposed by each fund. In the case of any shareholder holding a
share certificate or certificates, no exchanges may be made until all applicable
share certificates have been received by the Transfer Agent and deposited in the
shareholder's account.  An  exchange will  be  treated for  federal  income  tax
purposes  the  same  as a  repurchase  or  redemption of  shares,  on  which the
shareholder may realize a capital gain  or loss. However, the ability to  deduct
capital  losses on an  exchange may be  limited in situations  where there is an
exchange of  shares within  ninety  days after  the  shares are  purchased.  The
Exchange  Privilege is only available in states where an exchange may legally be
made.
 
    If DWR or  another Selected  Broker-Dealer is the  current broker-dealer  of
record and its account numbers are part of the account information, shareholders
may  initiate an exchange  of shares of the  Fund for shares of  any of the Dean
Witter Funds (for which  the Exchange Privilege is  available) pursuant to  this
Exchange  Privilege by contacting their account executive (no Exchange Privilege
Authorization Form is required). Other shareholders (and those shareholders  who
are  clients of  DWR or  another Broker-Dealer  but who  wish to  make exchanges
directly by writing or telephoning the Transfer Agent) must complete and forward
to the Transfer Agent an Exchange Privilege Authorization Form, copies of  which
may  be  obtained from  the  Transfer Agent,  to  initiate an  exchange.  If the
Authorization Form is  used, exchanges may  be made by  contacting the  Transfer
Agent at (800) 869-NEWS (toll-free).
 
    The  Fund  will  employ  reasonable  procedures  to  confirm  that  exchange
instructions communicated  over  the  telephone  are  genuine.  Such  procedures
include requiring various forms of personal identification such as name, mailing
address,social  security or  other tax  identification number  and DWR  or other
Selected Broker-Dealer account number (if any). Telephone instructions will also
be recorded. If such procedures are not employed, the Fund may be liable for any
losses due to unauthorized or fraudulent instructions.
 
    Telephone exchange instructions will be accepted if received by the Transfer
Agent between 9:00 a.m.  and 4:00 p.m. New  York time, on any  day the New  York
Stock  Exchange is  open. Any  shareholder wishing to  make an  exchange who has
previously filed an Exchange Privilege Authorization  Form and who is unable  to
reach  the Fund  by telephone  should contact his  or her  account executive, if
appropriate, or make a written  exchange request. Shareholders are advised  that
during  periods of drastic economic  or market changes, it  is possible that the
telephone exchange procedures may be  difficult to implement, although this  has
not been the case with the Dean Witter Funds in the past.
 
    For  further  information  concerning the  Exchange  Privilege, shareholders
should contact their DWR  or other Selected  Broker-Dealer account executive  or
the Transfer Agent.
 
                                       14
<PAGE>
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
    REDEMPTION.   Shares of the Fund can be redeemed for cash at any time at the
net asset value per share next determined; however, such redemption proceeds may
be reduced by  the amount of  any applicable contingent  deferred sales  charges
(see  below). If shares are  held in a Shareholder  Investment Account without a
share certificate, a written request for redemption to the Fund's Transfer Agent
at P.O. Box 983, Jersey City, NJ 07303 is required. If certificates are held  by
the  shareholder, the  shares may be  redeemed by  surrendering the certificates
with a written  request for  redemption, along with  any additional  information
required by the Transfer Agent.
 
    CONTINGENT DEFERRED SALES CHARGE.  Shares of the Fund which are held for six
years or more after purchase (calculated from the last day of the month in which
the  shares were purchased) will  not be subject to  any charge upon redemption.
Shares redeemed sooner than six years after purchase may, however, be subject to
a charge upon  redemption. This charge  is called a  "contingent deferred  sales
charge"  ("CDSC"), which  will be  a percentage of  the dollar  amount of shares
redeemed and will be assessed  on an amount equal to  the lesser of the  current
market  value  or  the cost  of  the shares  being  redeemed. The  size  of this
percentage will depend upon how long the shares have been held, as set forth  in
the table below:
 
<TABLE>
<CAPTION>
                                         CONTINGENT DEFERRED
              YEAR SINCE                    SALES CHARGE
               PURCHASE                  AS A PERCENTAGE OF
             PAYMENT MADE                  AMOUNT REDEEMED
- --------------------------------------  ---------------------
<S>                                     <C>
First.................................          5.0%
Second................................          4.0%
Third.................................          3.0%
Fourth................................          2.0%
Fifth.................................          2.0%
Sixth.................................          1.0%
Seventh and thereafter................          None
</TABLE>
 
   
    A  CDSC will not be imposed on:  (i) any amount which represents an increase
in value of shares purchased within the six years preceding the redemption; (ii)
the current net asset value of shares purchased more than six years prior to the
redemption; and (iii) the  current net asset value  of shares purchased  through
reinvestment  of dividends or  distributions and/or shares  acquired in exchange
for shares of Dean Witter Funds sold  with a front-end sales charge or of  other
Dean Witter Funds acquired in exchange for such shares. Moreover, in determining
whether  a CDSC is applicable it will  be assumed that amounts described in (i),
(ii), and (iii) above (in that order)  are redeemed first. In addition, no  CDSC
will  be imposed on redemptions of shares which are attributable to reinvestment
of dividends or distributions from, or the proceeds of, certain Unit  Investment
Trusts, or which were purchased by the employee benefit plans established by DWR
and  SPS Transaction Services, Inc. (an affiliate of DWR) for their employees as
qualified under Section 401(k) of the Internal Revenue Code.
    
 
    In addition, the CDSC, if otherwise  applicable, will be waived in the  case
of:
 
(1)     redemptions of shares held at the time a
shareholder  dies or becomes disabled,  only if the shares  are:  (A) registered
either in the name of an individual  shareholder (not a trust), or in the  names
of  such  shareholder and  his  or her  spouse as  joint  tenants with  right of
survivorship; or   (B) held in a qualified corporate or self-employed retirement
plan, Individual Retirement Account ("IRA")  or Custodial Account under  Section
403(b)(7) of the Internal Revenue Code ("403(b) Custodial Account"), provided in
either  case that the  redemption is requested  within one year  of the death or
initial determination of disability;
 
(2)     redemptions in connection with the following
retirement plan  distributions:   (A)  lump-sum or  other distributions  from  a
qualified  corporate or self-employed retirement  plan following retirement (or,
in the case of a "key employee"  of a "top heavy" plan, following attainment  of
age  59  1/2);   (B)  distributions  from  an IRA  or  403(b)  Custodial Account
following
 
                                       15
<PAGE>
attainment of age 59 1/2; or    (C) a tax-free return of an excess  contribution
to an IRA; and
 
(3)     all redemptions of shares held for the
benefit  of  a  participant  in a  corporate  or  self-employed  retirement plan
qualified under  Section  401(k)  of  the Internal  Revenue  Code  which  offers
investment  companies managed by the Investment  Manager or its subsidiary, Dean
Witter Services Company Inc., as  self-directed investment alternatives and  for
which  Dean Witter Trust Company, an affiliate of the Investment Manager, serves
as  recordkeeper   or   Trustee   ("Eligible  401(k)   Plan"),   provided   that
either:    (A)  the plan  continues  to be  an  Eligible 401(k)  Plan  after the
redemption; or      (B)  the  redemption is  in  connection  with  the  complete
termination  of  the  plan involving  the  distribution  of all  plan  assets to
participants.
 
    With reference to (1) above, for the purpose of determining disability,  the
Distributor  utilizes the definition of disability contained in Section 72(m)(7)
of the  Internal Revenue  Code, which  relates  to the  inability to  engage  in
gainful  employment. With reference  to (2) above,  the term "distribution" does
not encompass a direct transfer of  IRA, 403(b) Custodial Account or  retirement
plan  assets to a  successor custodian or  trustee. All waivers  will be granted
only following receipt by the  Distributor of confirmation of the  shareholder's
entitlement.
 
    REPURCHASE.    DWR  and  other  Selected  Broker-Dealers  are  authorized to
repurchase shares represented by a stock  certificate which is delivered to  any
of  their  offices.  Shares held  in  a  shareholder's account  without  a stock
certificate may also  be repurchased  by DWR and  other Selected  Broker-Dealers
upon  the telephonic or  telegraphic request of  the shareholder. The repurchase
price is the  net asset value  next determined (see  "Purchase of Fund  Shares")
after  such repurchase order is received by DWR or other Selected Broker-Dealer,
reduced by any applicable CDSC.
 
    The CDSC, if any, will be the only fee imposed by the Fund, the Distributor,
or DWR or other Selected Broker-Dealer.  The offer by the Distributor and  other
Selected  Broker-Dealers to repurchase shares may be suspended without notice by
the Distributor at any time. In that event, shareholders may redeem their shares
through the Fund's Transfer Agent as set forth above under "Redemption".
 
    PAYMENT FOR SHARES REDEEMED  OR REPURCHASED.   Payment for shares  presented
for  repurchase or  redemption will  be made  by check  within seven  days after
receipt by the Transfer Agent of the certificate and/or written request in  good
order.  Such payment may be postponed or the right of redemption suspended under
unusual circumstances; E.G., when normal trading is not taking place on the  New
York  Stock Exchange. If the shares to  be redeemed have recently been purchased
by check, payment of the redemption proceeds may be delayed for the minimum time
needed to verify that the check used  for investment has been honored (not  more
than  fifteen days from the time of receipt of the check by the Transfer Agent).
Shareholders  maintaining  margin   accounts  with  DWR   or  another   Selected
Broker-Dealer  are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin account.
 
    REINSTATEMENT PRIVILEGE.   A  shareholder  who has  had  his or  her  shares
redeemed  or  repurchased and  has not  previously exercised  this reinstatement
privilege may, within 30  days after the date  of the redemption or  repurchase,
reinstate any portion or all of the proceeds of such redemption or repurchase in
shares  of the Fund at the net asset value next determined after a reinstatement
request, together  with the  proceeds, is  received by  the Transfer  Agent  and
receive  a pro rata credit for any  CDSC paid in connection with such redemption
or repurchase.
 
    INVOLUNTARY REDEMPTION.   The Fund  reserves the  right to  redeem, upon  60
days'  notice and at net asset value,  the shares of any shareholder (other than
shares held  in an  Individual  Retirement Account  or Custodial  Account  under
Section 403(b)(7) of the Internal Revenue Code) whose
 
                                       16
<PAGE>
shares  have a value of less than $100, or such lesser amount as may be fixed by
the Fund's Board  of Directors  or, in  the case  of an  account opened  through
EasyInvest-SM-,  if after twelve  months the shareholder  has invested less than
$1,000 in the account.  However, before the Fund  redeems such shares and  sends
the  proceeds to the shareholder, it will  notify the shareholder that the value
of the shares is less  than the applicable amount  and allow the shareholder  to
make  an additional investment in an amount which will increase the value of the
account to at least the applicable amount before the redemption is processed. No
CDSC will be imposed on any involuntary redemption.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    DIVIDENDS AND DISTRIBUTIONS.   The Fund intends  to pay quarterly  dividends
and  to distribute substantially all of the Fund's net investment income and net
short-term capital gains, if there  are any, at least  once each year. The  Fund
may, however, determine either to distribute or to retain all or part of any net
long-term capital gains for reinvestment.
 
    All dividends and any capital gains distributions will be paid in additional
Fund  shares and  will be  automatically credited  to the  shareholder's account
without issuance  of a  stock  certificate unless  the shareholder  requests  in
writing    that   all   dividends   be   paid   in   cash.   (See   "Shareholder
Services--Automatic Investment of Dividends and Distributions".)
 
    TAXES.  Because  the Fund intends  to distribute all  of its net  investment
income  and net short-term capital gains to shareholders and remain qualified as
a regulated investment company under Subchapter M of the Internal Revenue  Code,
it  is not expected that the Fund will be required to pay any federal income tax
on such income and capital gains. Shareholders will normally have to pay Federal
income taxes, and  any state income  taxes, on the  dividends and  distributions
they receive from the Fund. Such dividends and distributions, to the extent that
they are derived from net investment income or net short-term capital gains, are
taxable to the shareholder as ordinary dividend income regardless of whether the
shareholder  receives  such  payments  in  additional  shares  or  in  cash. Any
dividends declared in the last  quarter of any calendar  year which are paid  in
the  following calendar year prior to February  1 will be deemed received by the
shareholder in the prior calendar year. Dividend distributions will be  eligible
for  the Federal dividends received deduction  available to the Fund's corporate
shareholders only to  the extent the  aggregate dividends received  by the  Fund
would  be eligible for the  deduction if the Fund  were the shareholder claiming
the dividends  received  deduction. In  this  regard, a  46-day  holding  period
generally must be met.
 
    Distributions  of  net  long-term  capital gains,  if  any,  are  taxable to
shareholders as long-term capital gains regardless of how long a shareholder has
held the Fund's shares and regardless of whether the distribution is received in
additional shares or in cash. Capital  gains distributions are not eligible  for
the dividends received deduction.
 
    After  the end of  the year, shareholders  will be sent  full information on
their dividends  and capital  gains distributions  for tax  purposes,  including
information as to the portion taxable as ordinary income, the portion taxable as
capital  gains, and the  amount of dividends eligible  for the Federal dividends
received deduction available to  corporations. To avoid being  subject to a  31%
Federal backup withholding tax on taxable dividends, capital gains distributions
and   the  proceeds  of  redemptions  and  repurchases,  shareholders'  taxpayer
identification numbers must be furnished and certified as to their accuracy.
 
    Shareholders should consult their  tax advisers as  to the applicability  of
the foregoing to their current situation.
 
                                       17
<PAGE>
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
    From  time to time the  Fund may quote its  "total return" in advertisements
and sales  literature. The  total return  of  the Fund  is based  on  historical
earnings and is not intended to indicate future performance. The "average annual
total  return" of the Fund refers to  a figure reflecting the average annualized
percentage increase (or decrease) in the  value of an initial investment in  the
Fund  of $1,000 over  periods of one,  five and ten  years. Average annual total
return reflects all income earned by the Fund, any appreciation or  depreciation
of  the Fund's assets, all  expenses incurred by the  Fund and all sales charges
which would be incurred  by redeeming shareholders, for  the stated periods.  It
also assumes reinvestment of all dividends and distributions paid by the Fund.
 
    In  addition to the foregoing, the Fund  may advertise its total return over
different periods of time by means of aggregate, average, year-by-year or  other
types  of total  return figures.  The Fund  may also  advertise the  growth of a
hypothetical investment of $10,000, $50,000 or  $100,000 in shares of the  Fund.
Such  calculations  may  or may  not  reflect  the deduction  of  the contingent
deferred sales charge which, if reflected, would reduce the performance  quoted.
The  Fund  from time  to time  may  also advertise  its performance  relative to
certain performance rankings and indexes compiled by independent  organizations,
such as mutual fund performance rankings of Lipper Analytical Services, Inc.
 
ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
 
    VOTING  RIGHTS.   All shares of  common stock of  the Fund are  of $0.01 par
value and are equal as to earnings,  assets and voting privileges. There are  no
conversion,   pre-emptive  or  other  subscription   rights.  In  the  event  of
liquidation, each share of common stock of  the Fund is entitled to its  portion
of  all of the  Fund's assets after all  debts and expenses  have been paid. The
shares do not have cumulative voting rights.
 
    Under ordinary circumstances, the Fund is not required, nor does it  intend,
to hold Annual Meetings of Shareholders. The Directors may call Special Meetings
of  Shareholders for action by shareholder vote as may be required by the Act or
the Fund's By-Laws.
 
    CODE OF ETHICS.   Directors,  officers and employees  of InterCapital,  Dean
Witter Services Company Inc. and the Distributor are subject to a strict Code of
Ethics adopted by those companies. The Code of Ethics is intended to ensure that
the interests of shareholders and other clients are placed ahead of any personal
interest,  that no undue personal benefit is obtained from a person's employment
activities and that actual and potential  conflicts of interest are avoided.  To
achieve  these goals and comply with regulatory requirements, the Code of Ethics
requires, among other things, that personal securities transactions by employees
of the companies be subject to an  advance clearance process to monitor that  no
Dean  Witter Fund is engaged at the same time  in a purchase or sale of the same
security. The  Code of  Ethics bans  the purchase  of securities  in an  initial
public  offering and prohibits engaging in  futures and options transactions and
profiting on short-term trading (that is, a purchase within sixty days of a sale
or a  sale  within  sixty days  of  a  purchase) of  a  security.  In  addition,
investment  personnel may  not purchase  or sell  a security  for their personal
account within thirty days  before or after any  transaction in any Dean  Witter
Fund  managed  by them.  Any violations  of the  Code of  Ethics are  subject to
sanctions,  including  reprimand,  demotion  or  suspension  or  termination  of
employment.  The Code  of Ethics comports  with regulatory  requirements and the
recommendations in the 1994 report by the Investment Company Institute  Advisory
Group on Personal Investing.
 
    SHAREHOLDER  INQUIRIES.  All inquiries regarding the Fund should be directed
to the Fund at the telephone numbers or address set forth on the front cover  of
this Prospectus.
 
                                       18
<PAGE>
                        THE DEAN WITTER FAMILY OF FUNDS
 
MONEY MARKET FUNDS                       DEAN WITTER RETIREMENT SERIES
Dean Witter Liquid Asset Fund Inc.       Liquid Asset Series
Dean Witter U.S. Government Money        U.S. Government Money Market Series
Market Trust                             U.S. Government Securities Series
Dean Witter Tax-Free Daily Income Trust  Intermediate Income Securities Series
Dean Witter California Tax-Free Daily    American Value Series
Income Trust                             Capital Growth Series
Dean Witter New York Municipal Money     Dividend Growth Series
Market Trust                             Strategist Series
EQUITY FUNDS                             Utilities Series
Dean Witter American Value Fund          Value-Added Market Series
Dean Witter Natural Resource             Global Equity Series
Development Securities Inc.              ASSET ALLOCATION FUNDS
Dean Witter Dividend Growth Securities   Dean Witter Strategist Fund
Inc.                                     Dean Witter Global Asset Allocation
Dean Witter Developing Growth            Fund
Securities Trust                         ACTIVE ASSETS ACCOUNT PROGRAM
Dean Witter World Wide Investment Trust  Active Assets Money Trust
Dean Witter Value-Added Market Series    Active Assets Tax-Free Trust
Dean Witter Utilities Fund               Active Assets California Tax-Free Trust
Dean Witter Capital Growth Securities    Active Assets Government Securities
Dean Witter European Growth Fund Inc.    Trust
Dean Witter Precious Metals and
Minerals Trust
Dean Witter Pacific Growth Fund Inc.
Dean Witter Health Sciences Trust
Dean Witter Global Dividend Growth
Securities
Dean Witter Global Utilities Fund
Dean Witter International SmallCap Fund
Dean Witter Mid-Cap Growth Fund
Dean Witter Balanced Growth Fund
Dean Witter Capital Appreciation Fund
Dean Witter Information Fund
Dean Witter Japan Fund
FIXED-INCOME FUNDS
Dean Witter High Yield Securities Inc.
Dean Witter Tax-Exempt Securities Trust
Dean Witter U.S. Government Securities
Trust
Dean Witter Federal Securities Trust
Dean Witter Convertible Securities
Trust
Dean Witter California Tax-Free Income
Fund
Dean Witter New York Tax-Free Income
Fund
Dean Witter World Wide Income Trust
Dean Witter Intermediate Income
Securities
Dean Witter Global Short-Term Income
Fund Inc.
Dean Witter Multi-State Municipal
Series Trust
Dean Witter Premier Income Trust
Dean Witter Short-Term U.S. Treasury
Trust
Dean Witter Diversified Income Trust
Dean Witter Limited Term Municipal
Trust
Dean Witter Short-Term Bond Fund
Dean Witter High Income Securities
Dean Witter National Municipal Trust
Dean Witter Balanced Income Fund
Dean Witter Hawaii Municipal Trust
Dean Witter Intermediate Term U.S.
Treasury Trust
 
<PAGE>
 
Dean Witter
Dividend Growth Securities Inc.
Two World Trade Center
New York, New York 10048
BOARD OF DIRECTORS                  DEAN WITTER
Michael Bozic                       DIVIDEND
Charles A. Fiumefreddo              GROWTH
Edwin J. Garn                       SECURITIES
John R. Haire
Dr. Manuel H. Johnson
Paul Kolton
Michael E. Nugent
Philip J. Purcell
John L. Schroeder
OFFICERS
Charles A. Fiumefreddo
Chairman and Chief Executive
Officer
Sheldon Curtis
Vice President, Secretary and
General Counsel
Paul D. Vance
Vice President
Thomas F. Caloia
Treasurer
CUSTODIAN
The Bank of New York
90 Washington Street
New York, New York 10286
TRANSFER AGENT AND
DIVIDEND DISBURSING AGENT
Dean Witter Trust Company
Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
INDEPENDENT ACCOUNTANTS
Price Waterhouse LLP
1177 Avenue of the Americas
New York, New York 10036
INVESTMENT MANAGER
Dean Witter InterCapital Inc.
 
                                           PROSPECTUS -- APRIL 29, 1996
<PAGE>
 
<TABLE>
<S>                                           <C>
STATEMENT OF ADDITIONAL INFORMATION           DEAN WITTER
APRIL 29, 1996                                DIVIDEND
                                              GROWTH
                                              SECURITIES INC.
</TABLE>
 
- ------------------------------------------------------------
 
    Dean  Witter Dividend  Growth Securities Inc.  (the "Fund")  is an open-end,
diversified management  investment  company  whose investment  objective  is  to
provide  reasonable current income  and long-term growth  of income and capital.
The Fund invests primarily in common stock of companies with a record of  paying
dividends and the potential for increasing dividends. (See "Investment Practices
and Policies".)
 
    A  Prospectus for the  Fund dated April  29, 1996, which  provides the basic
information you  should know  before  investing in  the  Fund, may  be  obtained
without charge from the Fund at the address or telephone numbers listed below or
from  the Fund's Distributor, Dean Witter Distributors Inc., or from Dean Witter
Reynolds Inc.,  at any  of  its branch  offices.  This Statement  of  Additional
Information is not a Prospectus. It contains information in addition to and more
detailed  than  that set  forth in  the  Prospectus. It  is intended  to provide
additional information regarding the activities and operations of the Fund,  and
should be read in conjunction with the Prospectus.
 
Dean Witter
Dividend Growth Securities Inc.
Two World Trade Center
New York, New York 10048
(212) 392-2550 or
(800) 869-NEWS (toll-free)
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<S>                                                                <C>
The Fund and its Management......................................     3
Directors and Officers...........................................     6
Investment Practices and Policies................................    11
Investment Restrictions..........................................    13
Portfolio Transactions and Brokerage.............................    14
The Distributor..................................................    16
Shareholder Services.............................................    20
Redemptions and Repurchases......................................    24
Dividends, Distributions and Taxes...............................    26
Performance Information..........................................    27
Shares of the Fund...............................................    28
Custodian and Transfer Agent.....................................    28
Independent Accountants..........................................    28
Reports to Shareholders..........................................    28
Legal Counsel....................................................    29
Experts..........................................................    29
Registration Statement...........................................    29
Financial Statements.............................................    30
Report of Independent Accountants................................    41
</TABLE>
 
                                       2
<PAGE>
THE FUND AND ITS MANAGEMENT
- --------------------------------------------------------------------------------
 
THE FUND
 
    The  Fund was  incorporated in  the state of  Maryland on  December 22, 1980
under the name InterCapital  Dividend Growth Securities Inc.  On March 16,  1983
the  Fund's shareholders approved  a change in the  Fund's name, effective March
21, 1983, to Dean Witter Dividend Growth Securities Inc.
 
THE INVESTMENT MANAGER
 
    Dean Witter InterCapital Inc. (the "Investment Manager" or  "InterCapital"),
a  Delaware corporation whose address  is Two World Trade  Center, New York, New
York 10048, is  the Fund's  investment manager. InterCapital  is a  wholly-owned
subsidiary  of Dean Witter, Discover &  Co. ("DWDC"), a Delaware corporation. In
an internal  reorganization  which took  place  in January,  1993,  InterCapital
assumed  the  investment  advisory,  administrative  and  management  activities
previously performed by the InterCapital  Division of Dean Witter Reynolds  Inc.
("DWR"), a broker-dealer affiliate of InterCapital. (As hereinafter used in this
Statement  of Additional  Information, the terms  "InterCapital" and "Investment
Manager"  refer  to   DWR's  InterCapital   Division  prior   to  the   internal
reorganization  and  to Dean  Witter  InterCapital Inc.  thereafter.)  The daily
management of  the  Fund  and  research relating  to  the  Fund's  portfolio  is
conducted  by  or  under  the direction  of  officers  of the  Fund  and  of the
Investment Manager, subject  to review  of investments  by the  Fund's Board  of
Directors.  In  addition, Directors  of the  Fund  provide guidance  on economic
factors and interest rate trends. Information as to these Directors and Officers
is contained under the caption "Directors and Officers."
 
    The Investment Manager is also the investment manager or investment  adviser
of  the  following investment  companies: Dean  Witter  Liquid Asset  Fund Inc.,
InterCapital Income Securities Inc., InterCapital Insured Municipal Bond  Trust,
InterCapital  Insured  Municipal  Trust, InterCapital  Insured  Municipal Income
Trust, InterCapital  California  Insured Municipal  Income  Trust,  InterCapital
Insured   Municipal  Securities,   InterCapital  Insured   California  Municipal
Securities,  InterCapital  Quality  Municipal  Investment  Trust,   InterCapital
Quality  Municipal  Income  Trust,  InterCapital  Quality  Municipal Securities,
InterCapital California  Quality  Municipal Securities,  InterCapital  New  York
Quality Municipal Securities, High Income Advantage Trust, High Income Advantage
Trust  II, High Income Advantage Trust III, Dean Witter Government Income Trust,
Dean Witter High Yield Securities Inc., Dean Witter Tax-Free Daily Income Trust,
Dean  Witter  Developing  Growth   Securities  Trust,  Dean  Witter   Tax-Exempt
Securities Trust, Dean Witter Natural Resource Development Securities Inc., Dean
Witter  Dividend Growth Securities  Inc., Dean Witter  American Value Fund, Dean
Witter Select  Municipal  Reinvestment  Fund, Dean  Witter  Variable  Investment
Series,  Dean Witter  World Wide Investment  Trust, Dean  Witter U.S. Government
Securities Trust, Dean Witter  U.S. Government Money  Market Trust, Dean  Witter
California Tax-Free Income Fund, Dean Witter New York Tax-Free Income Fund, Dean
Witter  Convertible Securities Trust, Dean Witter Federal Securities Trust, Dean
Witter Value-Added  Market  Series,  Dean Witter  Utilities  Fund,  Dean  Witter
Strategist Fund, Dean Witter California Tax-Free Daily Income Trust, Dean Witter
World Wide Income Trust, Dean Witter Intermediate Income Securities, Dean Witter
Capital  Growth Securities, Dean  Witter New York  Municipal Money Market Trust,
Dean Witter European  Growth Fund Inc.,  Dean Witter Pacific  Growth Fund  Inc.,
Dean  Witter Precious Metals  and Minerals Trust,  Dean Witter Global Short-Term
Income Fund Inc., Dean  Witter Multi-State Municipal  Series Trust, Dean  Witter
Premier  Income Trust, Dean  Witter Short-Term U.S.  Treasury Trust, Dean Witter
Diversified Income  Trust,  Dean  Witter  Health  Sciences  Trust,  Dean  Witter
Retirement  Series, Dean Witter  Global Dividend Growth  Securities, Dean Witter
Limited Term  Municipal Trust,  Dean Witter  Short-Term Bond  Fund, Dean  Witter
Global  Utilities  Fund, Dean  Witter International  SmallCap Fund,  Dean Witter
Mid-Cap Growth Fund, Dean  Witter High Income  Securities, Dean Witter  National
Municipal  Trust, Dean Witter  Select Dimensions Investment  Series, Dean Witter
Global Asset  Allocation Fund,  Dean Witter  Balanced Growth  Fund, Dean  Witter
Balanced  Income Fund, Dean  Witter Hawaii Municipal  Trust, Dean Witter Capital
Appreciation Fund, Dean Witter Information  Fund, Dean Witter Intermediate  Term
U.S.  Treasury  Trust, Dean  Witter Japan  Fund,  Active Assets  Tax-Free Trust,
Active Assets  California Tax-Free  Trust, Active  Assets Government  Securities
Trust, Municipal Income Trust, Municipal Income Trust II, Municipal Income Trust
III,  Municipal Income Opportunities Trust, Municipal Income Opportunities Trust
II,
 
                                       3
<PAGE>
Municipal Income Opportunities  Trust III,  Municipal Premium  Income Trust  and
Prime Income Trust. The foregoing investment companies, together with the Trust,
are collectively referred to as the Dean Witter Funds.
 
    In  addition,  Dean Witter  Services Company  Inc. ("DWSC"),  a wholly-owned
subsidiary of InterCapital, serves  as manager for  the following companies  for
which  TCW Funds Management, Inc. is  the investment adviser: TCW/DW Core Equity
Trust, TCW/DW  North American  Government Income  Trust, TCW/DW  Latin  American
Growth Fund, TCW/DW Income and Growth Fund, TCW/DW Small Cap Growth Fund, TCW/DW
Balanced  Fund, TCW/DW Total  Return Trust, TCW/DW  Mid-Cap Equity Trust, TCW/DW
Emerging Markets Opportunities Trust, TCW/DW Term Trust 2000, TCW/DW Term  Trust
2002  and TCW/ DW Term Trust 2003 (the "TCW/DW Funds"). InterCapital also serves
as: (i)  sub-adviser  to  Templeton  Global  Opportunities  Trust,  an  open-end
investment  company; (ii)  administrator of  The BlackRock  Strategic Term Trust
Inc., a closed-end investment company; and (iii) sub-administrator of MassMutual
Participation  Investors  and   Templeton  Global   Governments  Income   Trust,
closed-end investment companies.
 
    Pursuant  to an Investment  Management Agreement (the  "Agreement") with the
Investment Manager, the Fund has retained  the Investment Manager to manage  the
investment  of  the  Fund's assets,  including  the  placing of  orders  for the
purchase and sale of  portfolio securities. The  Investment Manager obtains  and
evaluates  such  information  and  advice relating  to  the  economy, securities
markets, and  specific  securities  as  it  considers  necessary  or  useful  to
continuously  manage the  assets of  the Fund  in a  manner consistent  with its
investment objective and policies.
 
    Under the  terms  of the  Agreement,  in  addition to  managing  the  Fund's
investments,  the Investment Manager  maintains certain of  the Fund's books and
records and  furnishes,  at its  own  expense, such  office  space,  facilities,
equipment, clerical help, bookkeeping and certain legal services as the Fund may
reasonably  require in the conduct of its business, including the preparation of
prospectuses, proxy statements and reports required to be filed with federal and
state securities commissions (except insofar as the participation or  assistance
of  independent accountants and  attorneys is, in the  opinion of the Investment
Manager, necessary or desirable). In  addition, the Investment Manager pays  the
salaries  of all personnel, including officers of the Fund, who are employees of
the Investment Manager. The Investment Manager also bears the cost of  telephone
service, heat, light, power and other utilities provided to the Fund.
 
    Effective  December  31,  1993,  pursuant to  a  Services  Agreement between
InterCapital and DWSC, DWSC began to provide the administrative services to  the
Fund  which were  previously performed  directly by  InterCapital. On  April 17,
1995, DWSC was  reorganized in the  State of Delaware,  necessitating the  entry
into  a new Services Agreement  between InterCapital and DWSC  on that date. The
foregoing internal reorganizations did not result in any change in the nature or
scope of the administrative services  being provided to the  Fund or any of  the
fees  being paid by the Fund for  the overall services being performed under the
terms of the existing Management Agreement.
 
    Expenses not expressly assumed by the Investment Manager under the Agreement
or by  the Distributor  of  the Fund's  shares,  Dean Witter  Distributors  Inc.
("Distributors"  or the "Distributor") (see "The  Distributor"), will be paid by
the Fund.  The expenses  borne by  the Fund  include, but  are not  limited  to:
expenses  of  the  Plan  of  Distribution  pursuant  to  Rule  12b-1  (see  "The
Distributor"); charges and expenses of any registrar, custodian, stock  transfer
and  dividend  disbursing  agent; brokerage  commissions;  taxes;  engraving and
printing stock certificates; registration costs of the Fund and its shares under
federal and state securities laws; the  cost and expense of printing,  including
typesetting,   and  distributing  Prospectuses   and  Statements  of  Additional
Information of the Fund and supplements thereto to the Fund's shareholders;  all
expenses of shareholders' and directors' meetings and of preparing, printing and
mailing  of  proxy  statements  and reports  to  shareholders;  fees  and travel
expenses of directors or members of any advisory board or committee who are  not
employees of the Investment Manager or any corporate affiliate of the Investment
Manager;  all  expenses  incident  to  any  dividend,  withdrawal  or redemption
options; charges and  expenses of any  outside service used  for pricing of  the
Fund's shares;
 
                                       4
<PAGE>
fees  and expenses of legal counsel, including  counsel to the directors who are
not interested persons of the Fund  or of the Investment Manager (not  including
compensation  or  expenses  of attorneys  who  are employees  of  the Investment
Manager), and independent accountants; membership dues of industry associations;
interest  on  Fund  borrowings;  postage;  insurance  premiums  on  property  or
personnel  (including officers  and directors)  of the  Fund which  inure to its
benefit; extraordinary expenses (including, but not limited to, legal claims and
liabilities and litigation costs and any indemnification relating thereto);  and
all other costs of the Fund's operation.
 
    As  full compensation for the services  and facilities furnished to the Fund
and expenses of the Fund  assumed by the Investment  Manager, the Fund pays  the
Investment  Manager  monthly  compensation  calculated  daily  by  applying  the
following annual rates to the net assets of the Fund determined as of the  close
of  each business day: 0.625%  of the portion of  daily net assets not exceeding
$250 million; 0.50% of  the portion of daily  net assets exceeding $250  million
but  not  exceeding  $1 billion;  0.475%  of  the portion  of  daily  net assets
exceeding $1 billion but not exceeding $2 billion; 0.45% of the portion of daily
net assets exceeding  $2 billion  but not exceeding  $3 billion;  0.425% of  the
portion  of daily net assets exceeding $3  billion but not exceeding $4 billion;
0.40% of the portion of daily net assets exceeding $4 billion but not  exceeding
$5  billion; 0.375% of the portion of  daily net assets exceeding $5 billion but
not exceeding $6 billion; 0.350% of the portion of daily net assets exceeding $6
billion but not exceeding  $8 billion; and  0.325% of the  portion of daily  net
assets  exceeding $8  billion. Effective May  1, 1996,  the Investment Manager's
compensation will be scaled down  to 0.30% on assets  over $10 billion. For  the
fiscal  years ended February 28,  1994, February 28, 1995  and February 29, 1996
the Fund accrued to  the Investment Manager  total compensation of  $26,921,563,
$29,221,606 and $34,849,553, respectively.
 
    Pursuant  to the Agreement, total operating expenses of the Fund are subject
to applicable limitations under rules and  regulations of states where the  Fund
is  authorized to sell its shares. Therefore, operating expenses are effectively
subject to the most restrictive of such  limitations as the same may be  amended
from time to time. Presently, the most restrictive limitation is as follows. If,
in  any fiscal  year, the Fund's  total operating expenses,  exclusive of taxes,
interest, brokerage fees, distribution fees  and extraordinary expenses (to  the
extent  permitted by applicable  state securities laws  and regulations), exceed
2 1/2% of  the first $30,000,000  of average daily  net assets, 2%  of the  next
$70,000,000  of  average  daily  net  assets  and  1  1/2%  of  any  excess over
$100,000,000, the Investment Manager will reimburse  the Fund for the amount  of
such  excess. Such amount,  if any, will  be calculated daily  and credited on a
monthly basis. During  the fiscal years  ended February 28,  1994, February  28,
1995  and February 29, 1996,  the Fund's expenses did  not exceed the limitation
set forth above.
 
    The Agreement  provides that  in  the absence  of willful  misfeasance,  bad
faith, gross negligence or reckless disregard of its obligations thereunder, the
Investment Manager is not liable to the Fund or any of its investors for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its  investors. The  Agreement in no  way restricts the  Investment Manager from
acting as investment manager or adviser to others.
 
    The Agreement was initially  approved by the Board  of Directors on  October
30,  1992 and by the  stockholders at a Special  Meeting of Stockholders held on
January 12, 1993. The Agreement is substantially identical to a prior investment
management agreement which was initially approved  by the Board of Directors  on
January 18, 1983, and by the stockholders of the Fund on March 16, 1983 (as such
agreement  had  been amended  prior thereto  to provide  for breakpoints  in the
management fee). The Agreement took effect on June 30, 1993 upon the spin-off by
Sears, Roebuck  and Co.  of its  remaining  shares of  DWDC. The  Agreement  was
amended  on May 1,  1994 to lower  management fees charged  on average daily net
assets of the  Fund in  excess of  $8 billion to  0.325%. The  Agreement may  be
terminated  at any time, without penalty, on thirty days' notice by the Board of
Directors of  the  Fund,  by the  holders  of  a majority,  as  defined  in  the
Investment  Company  Act of  1940, as  amended (the  "Act"), of  the outstanding
shares  of  the  Fund,  or  by  the  Investment  Manager.  The  Agreement   will
automatically terminate in the event of its assignment (as defined in the Act).
 
                                       5
<PAGE>
    Under its terms, the Agreement had an initial term ending April 30, 1994 and
will  continue in effect  from year to year  thereafter, provided continuance of
the Agreement is  approved at least  annually by the  vote of the  holders of  a
majority,  as defined in the  Act, of the outstanding shares  of the Fund, or by
the Board  of  Directors  of  the  Fund; provided  that  in  either  event  such
continuance  is approved annually by the vote  of a majority of the Directors of
the Fund  who are  not parties  to  the Agreement  or "interested  persons"  (as
defined  in the Act) of any such party (the "Independent Directors"), which vote
must be cast in  person at a meeting  called for the purpose  of voting on  such
approval.  At  their  meeting  held  on April  17,  1996,  the  Fund's  Board of
Directors, including all of the Independent Directors, approved continuation  of
the Agreement until April 30, 1997.
 
    The Fund has acknowledged that the name "Dean Witter" is a property right of
DWR. The Fund has agreed that DWR or its parent company may use or, at any time,
permit  others to use, the name "Dean Witter".  The Fund has also agreed that in
the event  the  Agreement  between  the  Investment  Manager  and  the  Fund  is
terminated,  or if the affiliation between the Investment Manager and its parent
is terminated, the Fund will eliminate the  name "Dean Witter" from its name  if
DWR or its parent shall so request.
 
DIRECTORS AND OFFICERS
- --------------------------------------------------------------------------------
 
    The  Directors and Executive Officers of  the Fund, their principal business
occupations during the last five years and their affiliations, if any, with  the
80 Dean Witter Funds and the 12 TCW/DW Funds, are shown below.
 
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND
               AND ADDRESS                               PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------  ----------------------------------------------------------------------
<S>                                         <C>
Michael Bozic (55)                          Chairman  and Chief Executive Officer  of Levitz Furniture Corporation
Director                                    (since November, 1995); Director or Trustee of the Dean Witter  Funds;
c/o Levitz Furniture Corporation            formerly  President and  Chief Executive  Officer of  Hills Department
6111 Broken Sound Parkway, N.W.             Stores (May, 1991-July, 1995);  formerly Chairman and Chief  Executive
Boca Raton, Florida                         Officer (1987-1990) and President and Chief Operating Officer (August,
                                            1990-February,  1991) of the Sears Merchandise Group of Sears, Roebuck
                                            and Co.; Director  or Trustee of  the Dean Witter  Funds; Director  of
                                            Eaglemark  Financial Services,  Inc., the  United Negro  College Fund,
                                            Weirton Steel Corporation and Domain Inc. (home decor retailer).
 
Charles A. Fiumefreddo* (62)                Chairman,  Chief  Executive  Officer  and  Director  of  InterCapital,
Chairman, President,                        Distributors  and DWSC; Executive Vice  President and Director of DWR;
Chief Executive Officer and Director        Chairman, Director or Trustee,  President and Chief Executive  Officer
Two World Trade Center                      of  the  Dean  Witter  Funds; Chairman,  Chief  Executive  Officer and
New York, New York                          Trustee of  the TCW/DW  Funds; Chairman  and Director  of Dean  Witter
                                            Trust  Company  ("DWTC");  Director  and/or  officer  of  various DWDC
                                            subsidiaries; formerly Executive Vice  President and Director of  DWDC
                                            (until February, 1993).
 
Edwin J. Garn (63)                          Director  or Trustee of the Dean  Witter Funds; formerly United States
Director                                    Senator (R-Utah) (1974-1992)  and Chairman,  Senate Banking  Committee
c/o Huntsman Chemical Corporation           (1980-1986);  formerly  Mayor  of Salt  Lake  City,  Utah (1971-1974);
500 Huntsman Way                            formerly Astronaut, Space Shuttle Discovery (April 12-19, 1985);  Vice
Salt Lake City, Utah                        Chairman,   Huntsman  Chemical  Corporation   (since  January,  1993);
                                            Director of Franklin  Quest (time management  systems) and John  Alden
                                            Financial  Corp.; member of the board  of various civic and charitable
                                            organizations.
</TABLE>
 
                                       6
<PAGE>
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND
               AND ADDRESS                               PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------  ----------------------------------------------------------------------
<S>                                         <C>
John R. Haire (71)                          Chairman of  the Audit  Committee  and Chairman  of the  Committee  of
Director                                    Independent  Directors or Trustees and Director or Trustee of the Dean
Two World Trade Center                      Witter Funds; Trustee of the TCW/DW Funds; formerly President, Council
New York, New York                          for Aid  to  Education (1978-1989)  and  formerly Chairman  and  Chief
                                            Executive   Officer  of  Anchor  Corporation,  an  Investment  Adviser
                                            (1964-1978); Director of Washington National Corporation (insurance).
 
Dr. Manuel H. Johnson (47)                  Senior Partner, Johnson Smick International, Inc., a consulting  firm;
Director                                    Koch  Professor of International Economics  and Director of the Center
c/o Johnson Smick International, Inc.       for Global Market Studies at George Mason University; Co-Chairman  and
1133 Connecticut Avenue, N.W.               a  founder  of  the Group  of  Seven Counsel  (G7C),  an international
Washington, DC                              economic commission; Director  or Trustee  of the  Dean Witter  Funds;
                                            Trustee  of the TCW/DW  Funds; Director of  NASDAQ (since June, 1995);
                                            Director of Greenwich Capital  Markets Inc. (broker-dealer);  formerly
                                            Vice  Chairman of the Board of Governors of the Federal Reserve System
                                            (1986-1990) and Assistant Secretary of the U.S. Treasury (1982-1986).
 
Paul Kolton (72)                            Director or Trustee of  the Dean Witter Funds;  Chairman of the  Audit
Director                                    Committee  and Committee  of Independent  Trustees and  Trustee of the
c/o Gordon Altman Butowsky                  TCW/DW Funds; formerly Chairman of the Financial Accounting  Standards
Weitzen Shalov & Wein                       Advisory Council; formerly Chairman and Chief Executive Officer of the
Counsel to the Independent Trustees         American  Stock  Exchange;  Director  of  UCC  Investors  Holding Inc.
114 West 47th Street                        (Uniroyal Chemical  Company  Inc.);  director or  trustee  of  various
New York, New York                          not-for profit organizations.
 
Michael E. Nugent (59)                      General   Partner,  Triumph   Capital,  L.P.,   a  private  investment
Director                                    partnership; Director or Trustee of the Dean Witter Funds; Trustee  of
c/o Triumph Capital, L.P.                   the  TCW/DW Funds; formerly Vice  President, Bankers Trust Company and
237 Park Avenue                             BT Capital  Corporation  (1984-1988);  Director  of  various  business
New York, New York                          organizations.
 
Philip J. Purcell* (52)                     Chairman  of the  Board of  Directors and  Chief Executive  Officer of
Director                                    DWDC, DWR and  Novus Credit Services  Inc.; Director of  InterCapital,
Two World Trade Center                      DWSC  and Distributors; Director or Trustee  of the Dean Witter Funds;
New York, New York                          Director and/or officer of various DWDC subsidiaries.
 
John L. Schroeder (65)                      Retired; Director or Trustee of the Dean Witter Funds; Trustee of  the
Director                                    TCW/DW   Funds;  Director  of  Citizens  Utilities  Company;  formerly
c/o Gordon Altman Butowsky                  Executive Vice  President and  Chief Investment  Officer of  the  Home
Weitzen Shalov & Wein                       Insurance  Company (August,  1991-September, 1995);  formerly Chairman
Counsel to the Independent Trustees         and Chief  Investment  Officer of  Axe-  Houghton Management  and  the
114 West 47th Street                        Axe-Houghton  Funds and  President of  USF&G Financial  Services, Inc.
New York, New York                          (June 1990-June, 1991).
 
Sheldon Curtis (64)                         Senior Vice President, Secretary  and General Counsel of  InterCapital
Vice President,                             and  DWSC; Senior  Vice President and  Secretary of  DWTC; Senior Vice
Secretary and General Counsel               President,  Assistant  Secretary  and  Assistant  General  Counsel  of
Two World Trade Center                      Distributors;   Assistant  Secretary  of   DWR;  and  Vice  President,
New York, New York                          Secretary and General Counsel of the Dean Witter Funds and the  TCW/DW
                                            Funds.
</TABLE>
 
                                       7
<PAGE>
<TABLE>
<CAPTION>
      NAME, AGE, POSITION WITH FUND
               AND ADDRESS                               PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS
- ------------------------------------------  ----------------------------------------------------------------------
<S>                                         <C>
Paul D. Vance (60)                          Senior  Vice President of InterCapital; Vice President of various Dean
Vice President                              Witter Funds.
Two World Trade Center
New York, New York
 
Thomas F. Caloia (50)                       First Vice President (since May,  1991) of InterCapital and  Assistant
Treasurer                                   Treasurer (since January, 1993) of InterCapital; Treasurer of the Dean
Two World Trade Center                      Witter  Funds  and  the  TCW/DW Funds;  previously  Vice  President of
New York, New York                          InterCapital; Treasurer of the TCW/ DW Funds.
</TABLE>
 
- ------------
 *Denotes Directors who are "interested persons" of the Fund, as defined in  the
  Act.
 
    In  addition, Robert  M. Scanlan, President  and Chief  Operating Officer of
InterCapital and DWSC,  Executive Vice  President of Distributors  and DWTC  and
Director   of  DWTC,  David  A.  Hughey,  Executive  Vice  President  and  Chief
Administrative Officer of InterCapital, DWSC, Distributors and DWTC and Director
of DWTC,  Robert S.  Giambrone,  Senior Vice  President of  InterCapital,  DWSC,
Distributors  and DWTC and Director of DWTC, Joseph J. McAlinden, Executive Vice
President and Chief Investment Officer of InterCapital and Kenton J. Hinchliffe,
Mark Bavoso and Ira  N. Ross, Senior Vice  Presidents of InterCapital, are  Vice
Presidents of the Fund. Marilyn K. Cranney and Barry Fink, First Vice Presidents
and Assistant General Counsels of InterCapital and DWSC, and Lou Anne D. McInnis
and  Ruth Rossi, Vice Presidents and  Assistant General Counsels of InterCapital
and DWSC, and Carsten  Otto, a staff attorney  with InterCapital, are  Assistant
Secretaries of the Fund.
 
THE BOARD OF DIRECTORS, THE INDEPENDENT DIRECTORS, AND THE COMMITTEES
 
    The   Board  of  Directors  consists  of  nine  (9)  directors.  These  same
individuals also  serve as  directors or  trustees for  all of  the Dean  Witter
Funds,  and are referred to in this section as Directors. As of the date of this
Statement of Additional Information, there are a total of 80 Dean Witter  Funds,
comprised  of 120 portfolios.  As of March  31, 1996, the  Dean Witter Funds had
total net  assets of  approximately $75.2  billion and  more than  five  million
shareholders.
 
    Seven  Directors (77% of  the total number) have  no affiliation or business
connection with InterCapital or any of its affiliated persons and do not own any
stock or other securities issued  by InterCapital's parent company, DWDC.  These
are the "disinterested" or "independent" Directors. The other two Directors (the
"management  Directors")  are affiliated  with InterCapital.  Five of  the seven
independent Directors are also Independent Trustees of the TCW/DW Funds.
 
    Law and regulation establish both general guidelines and specific duties for
the Independent Directors. The Dean  Witter Funds seek as Independent  Directors
individuals  of distinction and  experience in business  and finance, government
service or academia; these are people whose advice and counsel are in demand  by
others  and for  whom there is  often competition.  To accept a  position on the
Funds' Boards, such individuals may reject other attractive assignments  because
the  Funds make  substantial demands  on their time.  Indeed, by  serving on the
Funds' Boards, certain Directors who would otherwise be qualified and in  demand
to serve on bank boards would be prohibited by law from doing so.
 
    All of the Independent Directors serve as members of the Audit Committee and
the  Committee of the Independent Directors. Three of them also serve as members
of the Derivatives Committee. During the calendar year ended December 31,  1995,
the  three Committees held a combined  total of fifteen meetings. The Committees
hold some  meetings at  InterCapital's offices  and some  outside  InterCapital.
Management  Directors or officers  do not attend these  meetings unless they are
invited for purposes of furnishing information or making a report.
 
    The Committee of the Independent  Directors is charged with recommending  to
the  full Board approval  of management, advisory  and administration contracts,
Rule 12b-1  plans  and  distribution and  underwriting  agreements;  continually
reviewing   Fund   performance;   checking   on   the   pricing   of   portfolio
 
                                       8
<PAGE>
securities, brokerage  commissions, transfer  agent costs  and performance,  and
trading among Funds in the same complex; and approving fidelity bond and related
insurance  coverage and  allocations, as well  as other matters  that arise from
time to time.  The Independent  Directors are  required to  select and  nominate
individuals  to fill any Independent  Director vacancy on the  Board of any Fund
that has a Rule 12b-1 plan of  distribution. Most of the Dean Witter Funds  have
such a plan.
 
    The  Audit  Committee is  charged with  recommending to  the full  Board the
engagement  or  discharge  of  the  Fund's  independent  accountants;  directing
investigations  into matters  within the  scope of  the independent accountants'
duties, including the power  to retain outside  specialists; reviewing with  the
independent  accountants the audit plan and  results of the auditing engagement;
approving professional  services provided  by  the independent  accountants  and
other  accounting firms prior to the performance of such services; reviewing the
independence of the independent accountants; considering the range of audit  and
non-audit  fees;  reviewing  the  adequacy  of  the  Fund's  system  of internal
controls; and preparing  and submitting  Committee meeting minutes  to the  full
Board.
 
    Finally,  the  Board of  each  Fund has  formed  a Derivatives  Committee to
establish parameters for and oversee the activities of the Fund with respect  to
derivative investments, if any, made by the Fund.
 
DUTIES OF CHAIRMAN OF COMMITTEES
 
    The   Chairman  of  the  Committees  maintains   an  office  at  the  Funds'
headquarters in New York.  He is responsible for  keeping abreast of  regulatory
and  industry developments and the Funds'  operations and management. He screens
and/or prepares  written  materials  and  identifies  critical  issues  for  the
Independent  Directors  to consider,  develops  agendas for  Committee meetings,
determines the type and amount of  information that the Committees will need  to
form  a  judgment  on various  issues,  and  arranges to  have  that information
furnished to Committee members. He also arranges for the services of independent
experts and consults with them in advance of meetings to help refine reports and
to focus on critical issues. Members  of the Committees believe that the  person
who  serves as  Chairman of  all three  Committees and  guides their  efforts is
pivotal to the effective functioning of the Committees.
 
    The Chairman of the  Committees also maintains  continuous contact with  the
Funds'  management, with  independent counsel  to the  Independent Directors and
with the  Funds' independent  auditors.  He arranges  for  a series  of  special
meetings  involving  the annual  review of  investment advisory,  management and
other operating  contracts  of the  Funds  and,  on behalf  of  the  Committees,
conducts  negotiations with the Investment  Manager and other service providers.
In effect,  the Chairman  of the  Committees serves  as a  combination of  chief
executive and support staff of the Independent Directors.
 
    The Chairman of the Committees is not employed by any other organization and
devotes his time primarily to the services he performs as Committee Chairman and
Independent  Director of the Dean Witter Funds  and as an Independent Trustee of
the TCW/DW Funds.  The current  Committee Chairman has  had more  than 35  years
experience as a senior executive in the investment company industry.
 
ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT DIRECTORS FOR ALL DEAN
WITTER FUNDS
 
    The  Independent Directors and the Funds' management believe that having the
same Independent  Directors  for  each  of the  Dean  Witter  Funds  avoids  the
duplication  of  effort  that  would  arise  from  having  different  groups  of
individuals serving as Independent  Directors for each of  the Funds or even  of
sub-groups  of Funds.  They believe  that having  the same  individuals serve as
Independent Directors of  all the Funds  tends to increase  their knowledge  and
expertise regarding matters which affect the Fund complex generally and enhances
their  ability  to negotiate  on behalf  of  each Fund  with the  Fund's service
providers. This arrangement also precludes the possibility of separate groups of
Independent Directors arriving at conflicting decisions regarding operations and
management of the  Funds and  avoids the cost  and confusion  that would  likely
ensue.  Finally, having the same Independent  Directors serve on all Fund Boards
enhances the ability of  each Fund to  obtain, at modest  cost to each  separate
Fund, the services of Independent Directors, and a Chairman of their Committees,
of  the caliber, experience and business acumen  of the individuals who serve as
Independent Directors of the Dean Witter Funds.
 
                                       9
<PAGE>
COMPENSATION OF INDEPENDENT DIRECTORS
 
    The Fund pays  each Independent  Director an  annual fee  of $1,000  ($1,200
prior  to September 30, 1995) plus a per  meeting fee of $50 for meetings of the
Board of  Directors or  committees of  the Board  of Directors  attended by  the
Director  (the Fund pays  the Chairman of  the Audit Committee  an annual fee of
$750 and pays  the Chairman  of the Committee  of the  Independent Directors  an
additional annual fee of $2,400, in each case inclusive of the Committee meeting
fees).   The  Fund  also   reimburses  such  Directors   for  travel  and  other
out-of-pocket expenses  incurred  by  them in  connection  with  attending  such
meetings.  Directors and officers of  the Fund who are  or have been employed by
the Investment  Manager or  an  affiliated company  receive no  compensation  or
expense reimbursement from the Fund.
 
    The  Fund  has  adopted  a retirement  program  under  which  an Independent
Director who  retires after  serving for  at least  five years  (or such  lesser
period  as may be determined by the Board) as an Independent Director or Trustee
of any Dean Witter Fund that has adopted the retirement program (each such  Fund
referred  to as  an "Adopting  Fund" and  each such  Director referred  to as an
"Eligible Director")  is  entitled  to retirement  payments  upon  reaching  the
eligible  retirement age (normally, after attaining age 72). Annual payments are
based upon length of service. Currently, upon retirement, each Eligible Director
is entitled to receive  from the Fund,  commencing as of  his or her  retirement
date  and continuing for the remainder of  his or her life, an annual retirement
benefit  (the  "Regular  Benefit")  equal  to  25.0%  of  his  or  her  Eligible
Compensation  plus 0.4166666% of such Eligible  Compensation for each full month
of service as an Independent Director or Trustee of any Adopting Fund in  excess
of five years up to a maximum of 50.0% after ten years of service. The foregoing
percentages may be changed by the Board.(1) "Eligible Compensation" is one-fifth
of  the total compensation earned  by such Eligible Director  for service to the
Fund in  the five  year period  prior to  the date  of the  Eligible  Director's
retirement.  Benefits under the retirement program  are not secured or funded by
the Fund. As of the  date of this Statement  of Additional Information, 57  Dean
Witter Funds have adopted the retirement program.
 
    The  following table  illustrates the  compensation paid  and the retirement
benefits accrued to the Fund's Independent Directors by the Fund for the  fiscal
year  ended  February 29,  1996 and  the estimated  retirement benefits  for the
Fund's Independent Directors as of February 29, 1996.
 
<TABLE>
<CAPTION>
                             FUND COMPENSATION                             ESTIMATED RETIREMENT BENEFITS
                      -------------------------------   --------------------------------------------------------------------
 
                                                           ESTIMATED                                            ESTIMATED
                                         RETIREMENT       CREDIT YEARS       ESTIMATED                            ANNUAL
                        AGGREGATE         BENEFITS       OF SERVICE AT     PERCENTAGE OF       ESTIMATED         BENEFITS
NAME OF INDEPENDENT    COMPENSATION      ACCRUED AS        RETIREMENT         ELIGIBLE         ELIGIBLE            UPON
DIRECTOR              FROM THE FUND    FUND EXPENSES      (MAXIMUM 10)      COMPENSATION    COMPENSATION(2)   RETIREMENT(3)
- --------------------  --------------   --------------   ----------------   --------------   ---------------   --------------
<S>                   <C>              <C>              <C>                <C>              <C>               <C>
Michael Bozic.......     $ 1,700          $   442                10            50.0%            $1,900           $   950
Edwin J. Garn.......       1,900              672                10            50.0              1,900               950
John R. Haire.......       4,488(4)         3,008                10            50.0              4,727             2,363
Dr. Manuel H.
 Johnson............       1,900              273                10            50.0              1,900               950
Paul Kolton.........       1,850            1,130                10            49.6              2,260             1,121
Michael E. Nugent...       1,650              480                10            50.0              1,900               950
John L. Schroeder...       1,850              867                 8            41.7              1,900               792
</TABLE>
 
- ------------
(1)  An Eligible Director may elect alternate payments of his or her  retirement
    benefits  based upon the combined life  expectancy of such Eligible Director
    and his or her  spouse on the date  of such Eligible Director's  retirement.
    The  amount estimated to be payable under this method, through the remainder
    of the later of the lives of such Eligible Director and spouse, will be  the
    actuarial  equivalent  of the  Regular  Benefit. In  addition,  the Eligible
    Director may elect that the surviving spouse's periodic payment of  benefits
    will  be equal  to either 50%  or 100%  of the previous  periodic amount, an
    election that, respectively,  increases or decreases  the previous  periodic
    amount  so that the  resulting payments will be  the actuarial equivalent of
    the Regular Benefit.
 
(2)  Based on current levels of compensation.
 
(3)  Based  on current levels  of compensation. Amount  of annual benefits  also
    varies  depending  on the  Director's  elections described  in  Footnote (1)
    above.
 
(4)   Of Mr.  Haire's compensation  from  the Fund,  $3,150 is  paid to  him  as
    Chairman  of  the Committee  of the  Independent  Directors ($2,400)  and as
    Chairman of the Audit Committee ($750).
 
                                       10
<PAGE>
    The  following  table  illustrates  the  compensation  paid  to  the  Fund's
Independent Directors for the calendar year ended December 31, 1995 for services
to  the 79 Dean Witter Funds and, in  the case of Messrs. Haire, Johnson, Kolton
and Nugent, the 11  TCW/DW Funds that  were in operation  at December 31,  1995.
With  respect to Messrs. Haire, Johnson, Kolton and Nugent, the TCW/DW Funds are
included solely because of a limited exchange privilege between those Funds  and
five  Dean Witter Money Market Funds. Mr.  Schroeder was elected as a Trustee of
the TCW/DW Funds on April 20, 1995.
 
           CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS
 
<TABLE>
<CAPTION>
                                                                   FOR SERVICE AS    TOTAL CASH
                               FOR SERVICE                          CHAIRMAN OF     COMPENSATION
                              AS DIRECTOR OR                       COMMITTEES OF    FOR SERVICES
                               TRUSTEE AND       FOR SERVICE AS     INDEPENDENT          TO
                             COMMITTEE MEMBER     TRUSTEE AND        DIRECTORS/        79 DEAN
                                OF 79 DEAN      COMMITTEE MEMBER    TRUSTEES AND       WITTER
NAME OF INDEPENDENT               WITTER          OF 11 TCW/DW         AUDIT        FUNDS AND 11
 DIRECTOR                         FUNDS              FUNDS           COMMITTEES     TCW/DW FUNDS
- ---------------------------  ----------------   ----------------   --------------   -------------
<S>                          <C>                <C>                <C>              <C>
Michael Bozic..............      $126,050           --                 --             $126,050
Edwin J. Garn..............       136,450           --                 --              136,450
John R. Haire..............        98,450           $82,038           $217,350(5)      397,838
Dr. Manuel H. Johnson......       136,450            82,038            --              218,488
Paul Kolton................       136,450            54,788             36,900(6)      228,138
Michael E. Nugent..........       124,200            75,038            --              199,238
John L. Schroeder..........       136,450            46,964            --              183,414
</TABLE>
 
- ------------
(5)  For the 79 Dean Witter Funds in operation at December 31, 1995.
 
(6)  For the 11 TCW/DW Funds in operation at December 31, 1995.
 
    As of the date  of this Statement of  Additional Information, the  aggregate
number of shares of beneficial interest of the Fund owned by the Fund's officers
and  Directors  as a  group was  less than  1  percent of  the Fund's  shares of
beneficial interest outstanding.
 
INVESTMENT PRACTICES AND POLICIES
- --------------------------------------------------------------------------------
 
PORTFOLIO TRADING
 
    It is anticipated that  the Fund's portfolio turnover  rate will not  exceed
90% in any one year. A 90% turnover rate would occur, for example, if 90% of the
securities  held  in  the  Fund's  portfolio  (excluding  all  securities  whose
maturities at acquisition were one year  or less) were sold and replaced  within
one year.
 
SECURITY LOANS
 
    Consistent  with applicable regulatory  requirements, the Fund  may lend its
portfolio securities  to  brokers,  dealers and  other  financial  institutions,
provided that such loans are callable at any time by the Fund (subject to notice
provisions  described  below), and  are at  all  times secured  by cash  or cash
equivalents, which are maintained in a segregated account pursuant to applicable
regulations and that are at least  equal to the market value, determined  daily,
of the loaned securities. The advantage of such loans is that the Fund continues
to  receive the income on  the loaned securities while  at the same time earning
interest on the cash amounts deposited as collateral, which will be invested  in
short-term obligations.
 
    A loan may be terminated by the borrower on one business day's notice, or by
the  Fund on four  business days' notice.  If the borrower  fails to deliver the
loaned securities within four days after  receipt of notice, the Fund could  use
the  collateral to replace the securities  while holding the borrower liable for
any excess  of replacement  cost  over collateral.  As  with any  extensions  of
credit,  there are risks of  delay in recovery and, in  some cases, even loss of
rights in the collateral should the borrower of the securities fail financially.
However, these loans of portfolio securities  will only be made to firms  deemed
by  the Fund's management  to be creditworthy  and when the  income which can be
earned from such loans  justifies the attendant risks.  Upon termination of  the
loan, the borrower is required to return the securities to the Fund. Any gain or
loss  in the market price of the securities  during the period of the loan would
inure
 
                                       11
<PAGE>
to the Fund. The Fund will pay reasonable finder's, administrative and custodial
fees in connection with a loan of its securities. The creditworthiness of  firms
to which the Fund lends its portfolio securities will be monitored on an ongoing
basis.
 
    When  voting or consent rights which accompany loaned securities pass to the
borrower, the Fund will follow the  policy of calling the loaned securities,  to
be  delivered within one day after notice, to permit the exercise of such rights
if the matters involved would have a material effect on the Fund's investment in
such loaned securities. During its fiscal year ended February 29, 1996, the Fund
did not loan any of its portfolio securities and it has no intention of doing so
in the foreseeable future.
 
BORROWING OF MONEY
 
    The Fund did not borrow any money during its fiscal year ended February  29,
1996 and it has no intention of borrowing any money in the foreseeable future.
 
REPURCHASE AGREEMENTS
 
    When  cash may be available for  only a few days, it  may be invested by the
Fund in repurchase
agreements until such time as it may otherwise be invested or used for  payments
of  obligations of the Fund. These agreements, which  may be viewed as a type of
secured lending by the  Fund, typically involve the  acquisition by the Fund  of
debt securities from a selling financial institution such as a bank, savings and
loan  association or  broker-dealer. The agreement  provides that  the Fund will
sell back to  the institution,  and that  the institution  will repurchase,  the
underlying  security ("collateral") at a specified price  and at a fixed time in
the future, usually not more than seven days from the date of purchase. The Fund
will receive interest from the institution until the time when the repurchase is
to occur. Although such date is deemed by the Fund to be the maturity date of  a
repurchase  agreement,  the  maturities  of  securities  subject  to  repurchase
agreements are  not  subject  to any  limits  and  may exceed  one  year.  While
repurchase   agreements  involve  certain  risks   not  associated  with  direct
investments in debt securities, the Fund follows procedures designed to minimize
such risks. These procedures include effecting repurchase transactions only with
large, well  capitalized  and  well  established  financial  institutions  under
guidelines  established and monitored by the Board  of Directors of the Fund. In
addition, the value of the  collateral underlying the repurchase agreement  will
always be at least equal to the repurchase price, including any accrued interest
earned on the repurchase agreement. In the event of a default or bankruptcy by a
selling  financial institution, the Fund will seek to liquidate such collateral.
However, the exercising of the Fund's  right to liquidate such collateral  could
involve  certain costs or delays and, to  the extent that proceeds from any sale
upon a default  of the obligation  to repurchase were  less than the  repurchase
price, the Fund could suffer a loss. It is the current policy of the Fund not to
invest in repurchase agreements that do not mature within seven days if any such
investment, together with any other illiquid assets held by the Fund, amounts to
more  than  10%  of  its  total assets.  The  Fund's  investments  in repurchase
agreements may  at times  be substantial  when, in  the view  of the  Investment
Manager,  liquidity or other considerations  warrant. However, during its fiscal
year ended  February  29,  1996 the  Fund  did  not enter  into  any  repurchase
agreements  to the  extent that more  than 5% of  the Fund's net  assets were at
risk, and the Fund does  not intend to enter  into any repurchase agreements  to
the  extent that more than  5% of the Fund's  net assets will be  at risk in the
foreseeable future.
 
WHEN-ISSUED AND DELAYED DELIVERY SECURITIES AND FORWARD COMMITMENTS
 
    From time  to time  the Fund  may purchase  securities on  a when-issued  or
delayed  delivery  basis  or  may  purchase  or  sell  securities  on  a forward
commitment basis. When such transactions are  negotiated, the price is fixed  at
the  time of the commitment, but delivery and  payment can take place a month or
more after the date of commitment. While the Fund will only purchase  securities
on  a  when-issued,  delayed  delivery  or  forward  commitment  basis  with the
intention of acquiring the securities, the  Fund may sell the securities  before
the  settlement date, if it is deemed  advisable. The securities so purchased or
sold are subject to  market fluctuation and no  interest or dividends accrue  to
the  purchaser prior  to the  settlement date.  At the  time the  Fund makes the
commitment to purchase or sell securities on a when-issued, delayed delivery  or
forward  commitment basis, it will record the transaction and thereafter reflect
the value, each day, of such security  purchased, or if a sale, the proceeds  to
be  received, in determining its net asset value. At the time of delivery of the
securities, their value may be more or less than the purchase or sale price.
 
                                       12
<PAGE>
    The Fund will also establish a segregated account with its custodian bank in
which  it will continually maintain cash or cash equivalents or other high grade
debt portfolio securities equal in  value to commitments to purchase  securities
on  a  when-issued, delayed  delivery or  forward  commitment basis.  During the
fiscal year  ended  February  29,  1996,  the  Fund's  commitments  to  purchase
securities  on a when-issued,  delayed delivery or  forward commitment basis did
not exceed 5% of the Fund's net assets.
 
WHEN, AS AND IF ISSUED SECURITIES
 
    The Fund may purchase securities on a  "when, as and if issued" basis  under
which  the issuance of the security depends  upon the occurrence of a subsequent
event,  such  as  approval  of  a  merger,  corporate  reorganization  or   debt
restructuring.  The commitment for the purchase of any such security will not be
recognized in the portfolio of the Fund until the Investment Manager  determines
that  issuance of the security  is probable. At such  time, the Fund will record
the transaction and, in determining its net asset value, will reflect the  value
of  the security daily. At such time,  the Fund will also establish a segregated
account with  its  custodian  bank  in  which it  will  maintain  cash  or  cash
equivalents  or other  high grade  debt portfolio  securities equal  in value to
recognized commitments for such securities. The value of the Fund's  commitments
to  purchase the securities  of any one  issuer, together with  the value of all
securities of such issuer owned by the Fund,  may not exceed 5% of the value  of
the  Fund's total  assets at  the time the  initial commitment  to purchase such
securities  is  made  (see  "Investment  Restrictions").  An  increase  in   the
percentage  of the Fund's  assets committed to  the purchase of  securities on a
"when, as and  if issued" basis  may increase  the volatility of  its net  asset
value. The Investment Manager and the Board of Directors do not believe that the
net  asset  value of  the Fund  will be  adversely affected  by its  purchase of
securities on such basis.  During the fiscal year  ended February 29, 1996,  the
Fund  did not purchase any securities on a "when, as and if issued" basis and it
does not intend to in the foreeable future. The Fund may also sell securities on
a "when, as and if issued" basis provided that the issuance of the security will
result automatically from the exchange or conversion of a security owned by  the
Fund at the time of sale.
 
    The  Securities  and Exchange  Commission has  adopted  Rule 144A  under the
Securities Act of 1933, which will permit the Fund to sell restricted securities
to qualified institutional  buyers without limitation.  The Investment  Manager,
pursuant  to procedures adopted by the Board of Directors of the Fund, will make
a determination as to the liquidity of each restricted security purchased by the
Fund. If a restricted security is determined to be "liquid", such security  will
not  be included within the category  "illiquid securities", which under current
policy may not exceed 15% of the Fund's total assets. The Rule 144A  marketplace
of  sellers and qualified  institutional buyers is new  and still developing and
may take a period of time to develop  into a mature liquid market. As such,  the
market  for certain  private placements purchased  pursuant to Rule  144A may be
initially small or  may, subsequent to  purchase, become illiquid.  Furthermore,
the Investment Manager may not be possessed of all the information concerning an
issue  of securities that it wishes to  purchase in a private placement to which
it would normally have had  access, had the registration statement  necessitated
by a public offering been filed with the Securities and Exchange Commission.
 
INVESTMENT RESTRICTIONS
- --------------------------------------------------------------------------------
 
    In addition to the investment restrictions enumerated in the Prospectus, the
investment   restrictions  listed  below  have  been  adopted  by  the  Fund  as
fundamental  policies,  except  as  otherwise   indicated.  Under  the  Act,   a
fundamental  policy may  not be changed  without the  vote of a  majority of the
outstanding voting  securities  of the  Fund,  as defined  in  the Act.  Such  a
majority  is defined as the lesser of (a) 67% or more of the shares present at a
meeting of shareholders  of the Fund,  if the holders  of more than  50% of  the
outstanding  shares are present or represented by proxy; or (b) more than 50% of
the outstanding shares of the Fund. For purposes of the following  restrictions:
(i)  all percentage  limitations apply immediately  after a  purchase or initial
investment;  and  (ii)  any  subsequent  change  in  any  applicable  percentage
resulting  from market fluctuations or other changes in total or net assets does
not require elimination of any security from the portfolio.
 
                                       13
<PAGE>
    The Fund may not:
 
         1. Invest in securities of any issuer if, to the knowledge of the Fund,
    any officer or director of the Fund  or of the Investment Manager owns  more
    than  1/2  of 1%  of the  outstanding  securities of  such issuer,  and such
    officers and directors who own more than 1/2 of 1% own in the aggregate more
    than 5% of the outstanding securities of such issuer.
 
         2. Purchase or sell real estate or interests therein (including limited
    partnership interests), although the Fund may purchase securities of issuers
    which engage in real estate operations  and securities which are secured  by
    real estate or interests therein.
 
         3. Purchase or sell commodities or commodity futures contracts.
 
         4.  Purchase  oil,  gas  or other  mineral  leases,  rights  or royalty
    contracts or exploration or development  programs, except that the Fund  may
    invest  in the securities of companies  which operate, invest in, or sponsor
    such programs.
 
         5. Write, purchase or sell puts, calls, or combinations thereof.
 
         6. Invest more  than 5% of  the value  of its net  assets in  warrants,
    including  not more than 2% of such  assets in warrants not listed on either
    the New  York  or  American  Stock Exchange.  However,  the  acquisition  of
    warrants attached to other securities is not subject to this restriction.
 
         7.  Purchase  securities  of  other  investment  companies,  except  in
    connection with a  merger, consolidation, reorganization  or acquisition  of
    assets.
 
         8.  Borrow  money, except  that the  Fund  may borrow  from a  bank for
    temporary or emergency purposes  in amounts not exceeding  5% (taken at  the
    lower  of cost  or current  value) of  its total  assets (not  including the
    amount borrowed).
 
         9. Pledge its  assets or assign  or otherwise encumber  them except  to
    secure  borrowings effected within the  limitations set forth in restriction
    (8). To meet the requirements of regulations in certain states, the Fund, as
    a matter of operating policy but not as a fundamental policy, will limit any
    pledge of its assets to 4.5% of its net assets so long as shares of the Fund
    are being sold in those states.
 
        10. Issue senior securities as defined in the Act except insofar as  the
    Fund  may  be deemed  to have  issued a  senior security  by reason  of: (a)
    entering into any  repurchase agreement; (b)  borrowing money in  accordance
    with restrictions described above; or (c) lending portfolio securities.
 
        11.  Make loans of money  or securities, except: (a)  by the purchase of
    debt obligations in which the Fund may invest consistent with its investment
    objective and policies; (b) by  investment in repurchase agreements; or  (c)
    by lending its portfolio securities.
 
        12. Make short sales of securities.
 
        13.  Purchase securities on margin, except  for such short-term loans as
    are necessary for the clearance of purchases of portfolio securities.
 
        14. Engage in the underwriting of securities, except insofar as the Fund
    may be deemed an underwriter under  the Securities Act of 1933 in  disposing
    of  a portfolio security and then only  in an aggregate amount not to exceed
    5% of the Fund's total assets.
 
        15. Invest for the  purpose of exercising control  or management of  any
    other issuer.
 
PORTFOLIO TRANSACTIONS AND BROKERAGE
- --------------------------------------------------------------------------------
 
    Subject to the general supervision of the Board of Directors, the Investment
Manager  is responsible for decisions  to buy and sell  securities for the Fund,
the selection of brokers and dealers to effect the
 
                                       14
<PAGE>
transactions, and the  negotiation of brokerage  commissions, if any.  Purchases
and  sales of securities  on a stock  exchange are effected  through brokers who
charge  a  commission  for  their  services.  In  the  over-the-counter  market,
securities  are  generally  traded  on  a "net"  basis  with  dealers  acting as
principal for their own accounts without a stated commission, although the price
of the security usually includes a profit  to the dealer. The Fund also  expects
that  securities will be purchased at  times in underwritten offerings where the
price includes a  fixed amount  of compensation,  generally referred  to as  the
underwriter's  concession or discount.  On occasion, the  Fund may also purchase
certain money  market instruments  directly from  an issuer,  in which  case  no
commissions or discounts are paid. For the fiscal years ended February 28, 1994,
February  28, 1995 and February  29, 1996, the Fund  paid a total of $1,280,476,
$850,977 and $1,210,946, respectively, in brokerage commissions.
 
    The Investment Manager currently serves as investment manager or advisor  to
a number of clients, including other investment companies, and may in the future
act  as  investment manager  or adviser  to others.  It is  the practice  of the
Investment Manager to cause purchase and sale transactions to be allocated among
the Fund  and  others  whose assets  it  manages  in such  manner  as  it  deems
equitable.  In making such allocations among the Fund and other client accounts,
various  factors  may  be   considered,  including  the  respective   investment
objectives,  the relative size  of portfolio holdings of  the same or comparable
securities, the  availability of  cash for  investment, the  size of  investment
commitments  generally  held and  the opinions  of  the persons  responsible for
managing the portfolios of the  Fund and other client  accounts. In the case  of
certain  initial  and secondary  public  offerings, the  Investment  Manager may
utilize a pro-rata allocation process based on the size of the Dean Witter Funds
involved and the number of shares available from the public offering.
 
    The policy of the Fund regarding  purchases and sales of securities for  its
portfolio  is that  primary consideration  will be  given to  obtaining the most
favorable prices and efficient executions of transactions. Consistent with  this
policy,  when  securities transactions  are effected  on  a stock  exchange, the
Fund's policy is  to pay commissions  which are considered  fair and  reasonable
without necessarily determining that the lowest possible commissions are paid in
all  circumstances.  The Fund  believes that  a requirement  always to  seek the
lowest possible commission cost could impede effective portfolio management  and
preclude  the Fund and the  Investment Manager from obtaining  a high quality of
brokerage and research services. In  seeking to determine the reasonableness  of
brokerage  commissions paid  in any  transaction, the  Investment Manager relies
upon its experience  and knowledge  regarding commissions  generally charged  by
various  brokers and  on its judgment  in evaluating the  brokerage and research
services received from the broker effecting the transaction. Such determinations
are necessarily subjective and imprecise, as in most cases an exact dollar value
for those services is not ascertainable.
 
    In seeking to implement the Fund's policies, the Investment Manager  effects
transactions  with those brokers and dealers who the Investment Manager believes
provide the  most  favorable  prices  and are  capable  of  providing  efficient
executions.  If the  Investment Manager  believes such  price and  execution are
obtainable from more  than one broker  or dealer, it  may give consideration  to
placing  portfolio transactions with those brokers  and dealers who also furnish
research and other services to the Fund or the Investment Manager. Such services
may include,  but  are  not limited  to,  any  one or  more  of  the  following:
information  as  to  the  availability  of  securities  for  purchase  or  sale;
statistical or factual  information or opinions  pertaining to investment;  wire
services;  and  appraisals or  evaluations of  portfolio securities.  During the
fiscal year ended February 29, 1996,  the Fund directed the payment of  $755,543
in brokerage commissions in connection with transactions in the aggregate amount
of $497,919,405 to brokers because of research services provided.
 
    Consistent  with  the  policy  described  above,  brokerage  transactions in
securities listed on exchanges or admitted to unlisted trading privileges may be
effected through DWR. In order for DWR to effect any portfolio transactions  for
the  Fund, the commissions, fees  or other remuneration received  by DWR must be
reasonable and fair compared to the commissions, fees or other remuneration paid
to other brokers  in connection with  comparable transactions involving  similar
securities  being purchased or sold on an exchange during a comparable period of
time. This standard would allow DWR to receive
 
                                       15
<PAGE>
no more than  the remuneration  which would  be expected  to be  received by  an
unaffiliated broker in a commensurate arm's-length transaction. Furthermore, the
Directors  of  the Fund,  including  a majority  of  the Directors  who  are not
"interested" persons of the Fund, as defined in the Act, have adopted procedures
which are reasonably  designed to provide  that any commissions,  fees or  other
remuneration  paid to DWR are consistent with the foregoing standard. During the
fiscal years ended February 28, 1994,  February 28, 1995 and February 29,  1996,
the  Fund  paid a  total of  $199,065, $126,948  and $402,635,  respectively, in
brokerage commissions to  DWR. The Fund  does not reduce  the management fee  it
pays to the Investment Manager by any amount of the brokerage commissions it may
pay  to DWR. During the year ended  February 29, 1996, the brokerage commissions
paid to DWR represented approximately 33.25% of the total brokerage  commissions
paid by the Fund during the year and were paid on account of transactions having
a  dollar value equal to  approximately 33.73% of the  aggregate dollar value of
all portfolio transactions  of the Fund  during the year  for which  commissions
were paid.
 
    Pursuant to an order of the Securities and Exchange Commission, the Fund may
effect  principal transactions in certain money market instruments with DWR. The
Fund will limit their  transactions with DWR to  U.S. Government and  Government
Agency  Securities,  Bank Money  Instruments (i.e.  Certificates of  Deposit and
Bankers' Acceptances) and Commercial Paper.  Such transactions will be  effected
with  DWR only when the  price available from DWR  is better than that available
from other dealers. During  its fiscal years ended  February 28, 1994,  February
28,  1995  and  February  29,  1996,  the  Fund  did  not  effect  any principal
transactions with DWR.
 
    The information and services received by the Investment Manager from brokers
and dealers may be  of benefit to  the Investment Manager  in the management  of
accounts  of some of its other clients and may not in all cases benefit the Fund
directly. While  the receipt  of  such information  and  services is  useful  in
varying  degrees and would  generally reduce the amount  of research or services
otherwise performed by the Investment  Manager and thereby reduce its  expenses,
it is of indeterminable value and the Fund does not reduce the management fee it
pays  to the Investment  Manager by any  amount that may  be attributable to the
value of such services.
 
THE DISTRIBUTOR
- --------------------------------------------------------------------------------
 
    As discussed in the Prospectus, shares  of the Fund are distributed by  Dean
Witter  Distributors  Inc.  (the  "Distributor"),  on  a  continuous  basis. The
Distributor has entered into a selected dealer agreement with DWR, which through
its  own  sales  organization  sells  shares  of  the  Fund.  In  addition,  the
Distributor   may   enter   into   similar   agreements   with   other  selected
broker-dealers. The  Distributor,  a  Delaware corporation,  is  a  wholly-owned
subsidiary  of DWDC. The  Directors who are not,  and were not  at the time they
voted, interested persons of the Fund,  as defined in the Act (the  "Independent
Directors"),  approved, at their  meeting held on October  30, 1992, the current
Distribution Agreement appointing  the Distributor as  exclusive distributor  of
the  Fund's  shares  and  providing for  the  Distributor  to  bear distribution
expenses not borne by the Fund. By its terms, the Distribution Agreement had  an
initial  term ending April 30, 1994, and  provides that it will remain in effect
from year to year thereafter if approved by the Board. At their meeting held  on
April  17, 1996,  the Directors  of the Fund,  including all  of the Independent
Directors, approved  the  continuation  of the  Distribution  Agreement  for  an
additional year until April 30, 1997.
 
    The  Distributor bears all expenses it may incur in providing services under
the Distribution Agreement. Such expenses include the payment of commissions for
sales of the Fund's shares and incentive compensation to account executives. The
Distributor also pays certain  expenses in connection  with the distribution  of
the  Fund's shares, including the costs  of preparing, printing and distributing
advertising or promotional materials, and the costs of printing and distributing
prospectuses and supplements thereto  used in connection  with the offering  and
sale  of the  Fund's shares.  The Fund bears  the costs  of initial typesetting,
printing  and   distribution  of   prospectuses  and   supplements  thereto   to
shareholders.  The Fund  also bears  the costs of  registering the  Fund and its
shares under federal  and state securities  laws. The Fund  and the  Distributor
have  agreed  to indemnify  each  other against  certain  liabilities, including
 
                                       16
<PAGE>
liabilities under the Securities Act of 1933, as amended. Under the Distribution
Agreement, the Distributor uses  its best efforts in  rendering services to  the
Fund,  but in the absence of willful misfeasance, bad faith, gross negligence or
reckless disregard of its obligations, the Distributor is not liable to the Fund
or any of its shareholders for any error  of judgement or mistake of law or  for
any act or omission or for any losses sustained by the Fund or its shareholders.
 
PLAN OF DISTRIBUTION
 
    To compensate the Distributor for the services provided and for the expenses
borne  under  the  Distribution  Agreement,  the  Fund  has  adopted  a  Plan of
Distribution pursuant to  Rule 12b-1  under the  Act (the  "Plan"), pursuant  to
which  the  Fund pays  the Distributor  compensation  accrued daily  and payable
monthly at the  annual rate  of 1.0%  of the lesser  of: (a)  the average  daily
aggregate  gross sales of the  Fund's shares since the  inception of the Plan on
July 2,  1984  (not  including  reinvestments  of  dividends  or  capital  gains
distributions),  less the average daily aggregate  net asset value of the Fund's
shares redeemed  since the  Plan's inception  upon which  a contingent  deferred
sales  charge has been imposed or upon which such charge has been waived, or (b)
the average daily net assets of the  Fund attributable to shares issued, net  of
related  shares redeemed, since the inception  of the Plan. The Distributor also
receives the proceeds of  contingent deferred sales  charges imposed on  certain
redemptions  of shares (see "Redemptions  and Repurchases -- Contingent Deferred
Sales Charge" in the Prospectus). The Distributor has informed the Fund that  it
received  approximately  $6,568,000,  $9,850,627 and  $9,444,839,  in contingent
deferred sales charges during the fiscal years ended February 28, 1994, February
28, 1995 and February 29, 1996.
 
    The Distributor has informed the Fund that a portion of the fees payable  by
the  Fund each  year pursuant  to the Plan,  which may  not exceed  0.25% of the
Fund's average daily net assets, is  characterized as a "service fee" under  the
Rules  of Fair  Practice of the  National Association of  Securities Dealers (of
which the Distributor is a  member). Such portion of the  fee is a payment  made
for  personal  service  and/or  the  maintenance  of  shareholder  accounts. The
remaining portion of the Plan  fees payable by the  Fund is characterized as  an
"asset-based  sales charge"  as such is  defined by the  aforementioned Rules of
Fair Practice. At their meeting held on  October 26, 1995, the Directors of  the
Fund, including all of the Independent 12b-1 Directors, approved an amendment to
the  Plan to permit payments  to be made under the  Plan with respect to certain
distribution expenses incurred  in connection with  the distribution of  shares,
including  personal services  to shareholders with  respect to  holdings of such
shares, of an  investment company whose  assets are  acquired by the  Fund in  a
tax-free reorganization.
 
    The  Plan  was  originally  adopted  by a  majority  vote  of  the  Board of
Directors, including all of  the Directors who are  not "interested persons"  of
the  Fund (the "Independent Directors") (none of  whom had or have any direct or
indirect financial  interest in  the operation  of the  Plan) (the  "Independent
12b-1  Directors"), cast in person at a meeting called for the purpose of voting
on the Plan, on April 16, 1984,  and by the shareholders holding a majority,  as
defined  in the Act, of the outstanding shares of the Fund, at the Fund's Annual
Meeting of Shareholders held on June 22, 1984.
 
    Pursuant to the Plan  and as required by  Rule 12b-1, the Distributor  shall
provide  the Fund, for review by the  Directors, and the Directors shall review,
quarterly, a  written report  of the  amounts expended  under the  Plan and  the
purpose for which such expenditures were made.
 
    The  Fund accrued $66,486,095 to the  Distributor, pursuant to the Plan, for
its fiscal year ended February 29, 1996. This is an accrual at an annual rate of
1% of the average  daily aggregate gross  sales of the  Fund's shares since  the
inception  of the Plan on July 2, 1984 (not including reinvestments of dividends
or capital  gains distributions),  less the  average daily  aggregate net  asset
value  of the  Fund's shares  redeemed since the  Plan's inception  upon which a
contingent deferred sales charge has been imposed or upon which such charge  has
been waived.
 
    The  Plan was adopted  in order to  permit the implementation  of the Fund's
method of distribution. Under  this distribution method shares  of the Fund  are
sold  without a sales load  being deducted at the time  of purchase, so that the
full amount  of  an investor's  purchase  payment  will be  invested  in  shares
 
                                       17
<PAGE>
without  any deduction for sales charges. Shares of the Fund may be subject to a
contingent deferred sales charge, payable to the Distributor, if redeemed during
the six years after  their purchase. DWR compensates  its account executives  by
paying  them, from its own funds, commissions for the sale of the Fund's shares,
currently a gross  sales credit of  up to 5%  of the amount  sold and an  annual
residual  commission of  up to  .25 of  1% of  the current  value (not including
reinvested dividends  or distributions)  of  the amount  sold. The  gross  sales
credit  is  a charge  which  reflects commissions  paid  by DWR  to  its account
executives and DWR's  Fund associated  distribution-related expenses,  including
sales  compensation, and  overhead and other  branch office distribution-related
expenses including:  (a)  the expenses  of  operating DWR's  branch  offices  in
connection with the sale of Fund shares, including lease costs, the salaries and
employee  benefits  of operations  and sales  support personnel,  utility costs,
communications costs and the costs of stationery and supplies, (b) the costs  of
client  sales seminars, (c) travel expenses of mutual fund sales coordinators to
promote the  sale of  Fund shares  and  (d) other  expenses relating  to  branch
promotion  of  Fund  share  sales. The  distribution  fee  that  the Distributor
receives from the Fund under the Plan, in effect, offsets distribution  expenses
incurred  on behalf of the  Fund and DWR's opportunity  costs, such as the gross
sales credit and an assumed interest charge thereon ("carrying charge"). In  the
Distributor's  reporting of its distribution expenses  to the Fund, such assumed
interest (computed at the "broker's call rate") has been calculated on the gross
sales credit as it is reduced by amounts received by DWR under the Plan and  any
contingent deferred sales charges received by the Distributor upon redemption of
shares  of the  Fund. No  other interest  charge is  included as  a distribution
expense in  the Distributor's  calculation of  its distribution  costs for  this
purpose.  The  broker's call  rate is  the interest  rate charged  to securities
brokers on loans secured by exchange-listed securities.
 
    The Fund paid 100% of the $66,486,095 accrued under the Plan for the  fiscal
year ended February 29, 1996 to the Distributor and DWR. DWR and the Distributor
estimate  that they spent, pursuant  to the Plan, $572,969,273  on behalf of the
Fund from the inception of the Plan  through February 29, 1996. It is  estimated
that  this  amount was  spent  in approximately  the  following ways:  (i) 1.17%
($6,703,246) -- advertising and promotional expenses; (ii) 0.18% ($1,048,675) --
printing of prospectuses  for distribution to  other than current  shareholders;
and  (iii) 98.65%  ($565,217,352) -- other  expenses, including  the gross sales
credit and  the  carrying  charge,  of  which  10.79%  ($60,997,746)  represents
carrying  charges, 35.75%  ($202,040,796) represents  commission credits  to DWR
branch offices  for payments  of commissions  to account  executives and  53.46%
($302,178,810)  represents overhead and other branch office distribution-related
expenses.
 
    At any given time, the expenses incurred in distributing shares of the  Fund
may be more or less than the total of (i) the payments made by the Fund pursuant
to  the Plan and (ii) the proceeds  of contingent deferred sales charges paid by
investors upon redemption of shares. The  Distributor has advised the Fund  that
such  excess amount, including  the carrying charge  designed to approximate the
opportunity costs incurred  by DWR which  arise from it  having advanced  monies
without  having received the amount of any  sales charges imposed at the time of
sale of the Fund's shares, totalled $185,746,988 as of February 29, 1996,  which
amount constitutes 1.90% of the Fund's net assets on such date. Because there is
no  requirement under the  Plan that the  Distributor be reimbursed  for all its
expenses or any requirement that the Plan  be continued from year to year,  this
excess  amount does not constitute a liability of the Fund. Although there is no
legal obligation for  the Fund to  pay expenses incurred  in excess of  payments
made  to the Distributor under the Plan  and the proceeds of contingent deferred
sales charges paid by investors upon redemption of shares, if for any reason the
Plan is terminated, the Directors will consider at that time the manner in which
to treat such expenses. Any cumulative expenses incurred, but not yet  recovered
through  distribution fees or contingent deferred  sales charges, may or may not
be recovered  through  future distribution  fees  or contingent  deferred  sales
charges.
 
    No  interested person of the Fund nor any Director of the Fund who is not an
interested person of the Fund, as defined in the Act, had any direct or indirect
financial interest in the operation  of the Plan except  to the extent that  the
Investment  Manager  or certain  of its  employees  may be  deemed to  have such
interest as a result  of benefits derived from  the successful operation of  the
Plan or as a result of receiving a portion of the amounts expended thereunder by
the Fund.
 
                                       18
<PAGE>
    Under  its terms, the Plan had an initial term ending December 31, 1984, and
provides that it will  remain in effect from  year to year thereafter,  provided
such  continuance is approved annually by a  vote of the Directors in the manner
described above. Continuance of the Plan for one year, until April 30, 1997, was
approved by the  Board of Directors  of the  Fund, including a  majority of  the
Independent 12b-1 Directors, at a Board meeting held on April 17, 1996. Prior to
approving  the continuation of  the Plan, the Board  requested and received from
the Distributor and reviewed  all the information which  it deemed necessary  to
arrive  at an informed determination. In  making their determination to continue
the Plan, the Directors considered: (1) the Fund's experience under the Plan and
whether such experience indicates that the Plan is operating as anticipated; (2)
the benefits the Fund had obtained, was obtaining and would be likely to  obtain
under  the Plan; and (3) what services  had been provided and were continuing to
be provided under the Plan by the Distributor to the Fund and its  stockholders.
Based  upon  their review,  the Directors  of  the Fund,  including each  of the
Independent 12b-1 Directors, determined that  continuation of the Plan would  be
in  the best  interest of  the Fund  and would  have a  reasonable likelihood of
continuing to benefit the Fund and its shareholders. In the Directors' quarterly
review of the  Plan, they will  consider its continued  appropriateness and  the
level of compensation provided therein.
 
    The  Plan may not be  amended to increase materially  the amount to be spent
for the services described therein without  approval of the shareholders of  the
Fund,  and all  material amendments  of the  Plan must  also be  approved by the
Directors in the manner described above. The Plan may be terminated at any time,
without payment of any penalty, by vote  of a majority of the Directors who  are
not  interested persons of the Fund and who have no direct or indirect financial
interest in  the operation  of the  Plan, or  by a  vote of  a majority  of  the
outstanding  voting securities of the  Fund (as defined in  the Act) on not more
than thirty days' written notice to any  other party to the Plan. The Plan  will
automatically  terminate in the event of its assignment 12b-1 (as defined in the
Act). So  long  as  the Plan  is  in  effect, the  election  and  nomination  of
Independent  Directors shall be  committed to the  discretion of the Independent
Directors.
 
DETERMINATION OF NET ASSET VALUE
 
    As stated  in  the Prospectus,  short-term  debt securities  with  remaining
maturities  of 60 days or  less at the time of  purchase are valued at amortized
cost, unless  the  Board of  Directors  determines  such does  not  reflect  the
securities' market value, in which case these securities will be valued at their
fair value as determined by the Directors. Other short-term debt securities will
be  valued on a mark-to-market  basis until such time  as they reach a remaining
maturity of sixty days,  whereupon they will be  valued at amortized cost  using
their value on the 61st day unless the Directors determine such does not reflect
the  securities' market value, in which case  these securities will be valued at
their fair  value  as  determined  by the  Directors.  Listed  options  on  debt
securities are valued at the latest sale price on the exchange on which they are
listed  unless no sales of such options have taken place that day, in which case
they will be  valued at  the mean  between their  latest bid  and asked  prices.
Unlisted  options on  debt securities and  all options on  equity securities are
valued at the mean between their latest bid and asked prices. Futures are valued
at the latest sale price on the commodities exchange on which they trade  unless
the  Directors determine that such price does not reflect their market value, in
which case  they  will be  valued  at their  fair  value as  determined  by  the
Directors.  All other securities and other assets are valued at their fair value
as determined  in good  faith  under procedures  established  by and  under  the
supervision of the Directors.
 
    The  net asset value per share of the  Fund is determined once daily at 4:00
p.m. New York time (or, on days when the New York Stock Exchange closes prior to
4 p.m., at such earlier time), on each  day that the New York Stock Exchange  is
open by taking the value of all assets of the Fund, subtracting its liabilities,
dividing  by the number of shares outstanding and adjusting to the nearest cent.
The New  York Stock  Exchange  currently observes  the following  holidays:  New
Year's  Day, President's Day, Good Friday, Memorial Day, Independence Day, Labor
Day, Thanksgiving Day, and Christmas Day.
 
                                       19
<PAGE>
SHAREHOLDER SERVICES
- --------------------------------------------------------------------------------
 
    Upon the purchase of shares of the Fund, a Shareholder Investment Account is
opened for the investor on  the books of the Fund  and maintained by the  Fund's
transfer  agent, Dean  Witter Trust Company  (the "Transfer Agent").  This is an
open account in which shares owned by the investor are credited by the  Transfer
Agent  in lieu  of issuance of  a stock  certificate. If a  stock certificate is
desired, it must be requested in writing for each transaction. Certificates  are
issued  only for full shares and may be  redeposited in the account at any time.
There is no charge  to the investor  for issuance of  a certificate. Whenever  a
shareholder  instituted transaction  takes place  in the  Shareholder Investment
Account,  the  shareholder  will  be  mailed  a  written  confirmation  of   the
transaction from the Fund or from DWR or another broker-dealer.
 
    AUTOMATIC  INVESTMENT  OF DIVIDENDS  AND DISTRIBUTIONS.    As stated  in the
Prospectus,  all   income  dividends   and  capital   gains  distributions   are
automatically  paid  in  full and  fractional  shares  of the  Fund,  unless the
shareholder requests that they be paid in  cash. Each purchase of shares of  the
Fund is made upon the condition that the Transfer Agent is thereby automatically
appointed  as agent of the  investor to receive all  dividends and capital gains
distributions on shares owned by the investor. Such dividends and  distributions
will  be paid, at the  net asset value per  share, in shares of  the Fund (or in
cash if the shareholder so requests) as  of the close of business on the  record
date.  At any time  an investor may  request the Transfer  Agent, in writing, to
have subsequent dividends and/or capital gains distributions paid to him or  her
in  cash rather than  shares. To assure  sufficient time to  process the change,
such request must be received by the Transfer Agent at least five business  days
prior  to  the record  date  of the  dividend or  distribution.  In the  case of
recently purchased  shares for  which registration  instructions have  not  been
received on the record date, cash payments will be made to DWR or other selected
broker-dealer,  which will be forwarded to  the shareholder, upon the receipt of
proper instructions.
 
    TARGETED  DIVIDENDS.-SM-    In  states  where  it  is  legally  permissible,
shareholders  may also have all income dividends and capital gains distributions
automatically invested in shares of an open-end Dean Witter Fund other than Dean
Witter Dividend Growth Securities Inc. Such investment will be made as described
above for automatic investment in shares of the Fund, at the net asset value per
share of  the selected  Dean Witter  Fund as  of the  close of  business on  the
payment  date of the dividend or distribution  and will begin to earn dividends,
if any, in the selected Dean Witter  Fund the next business day. To  participate
in  the Targeted  Dividends program,  shareholders should  contact their  DWR or
other  selected  broker-dealer   account  executive  or   the  Transfer   Agent.
Shareholders of Dean Witter Dividend Growth Securities Inc. must be shareholders
of  the Dean Witter Fund  targeted to receive investments  from dividends at the
time they  enter the  Targeted Dividends  program. Investors  should review  the
prospectus of the targeted Dean Witter Fund before entering the program.
 
    EASYINVEST.-SM-    Shareholders may  subscribe  to EasyInvest,  an automatic
purchase plan  which  provides  for  any  amount  from  $100  to  $5,000  to  be
transferred automatically from a checking or savings account, on a semi-monthly,
monthly  or quarterly basis, to  the Transfer Agent for  investment in shares of
the Fund. Shares purchased through EasyInvest will be added to the shareholder's
existing account at  the net asset  value calculated the  same business day  the
transfer  of  funds is  effected.  For further  information  or to  subscribe to
EasyInvest,  shareholders   should  contact   their   DWR  or   other   selected
broker-dealer account executive or the Transfer Agent.
 
    INVESTMENT  OF DIVIDENDS OR DISTRIBUTIONS RECEIVED IN CASH.  As discussed in
the Prospectus,  any shareholder  who  receives a  cash payment  representing  a
dividend  or capital gains distribution may invest such dividend or distribution
at net asset value, without the imposition of a contingent deferred sales charge
upon redemption, by returning  the check or the  proceeds to the Transfer  Agent
within  30 days after the payment date.  If the shareholder returns the proceeds
of a  dividend or  distribution, such  funds  must be  accompanied by  a  signed
statement  indicating that the proceeds constitute a dividend or distribution to
be invested. Such investment will be made at the net asset value per share  next
determined after receipt of the check or the proceeds by the Transfer Agent.
 
                                       20
<PAGE>
    SYSTEMATIC  WITHDRAWAL PLAN.   As discussed in  the Prospectus, a systematic
withdrawal plan (the "Withdrawal Plan") is available for shareholders who own or
purchase shares of the  Fund having a  minimum value of  $10,000 based upon  the
then  current  net asset  value.  The Withdrawal  Plan  provides for  monthly or
quarterly (March, June, September and December)  checks in any amount, not  less
than  $25, or in any  whole percentage of the  account balance, on an annualized
basis. Any applicable contingent deferred sales charge will be imposed on shares
redeemed  under  the  Withdrawal  Plan  (see  "Redemptions  and  Repurchases  --
Contingent Deferred Sales Charge" in the Prospectus). Therefore, any shareholder
participating  in the Withdrawal Plan will  have sufficient shares redeemed from
his or  her account  so that  the  proceeds (net  of any  applicable  contingent
deferred  sales charge)  to the  shareholder will  be the  designated monthly or
quarterly amount.
 
    Withdrawal Plan payments should  not be considered  as dividends, yields  or
income,  If periodic withdrawal plan payments continuously exceed net investment
income and  net capital  gains, the  shareholder's original  investment will  be
correspondingly reduced and ultimately exhausted.
 
    Each  withdrawal constitutes  a redemption  of shares  and any  gain or loss
realized must  be  recognized for  Federal  income tax  purposes.  Although  the
shareholder  may  make  additional  investments  of  $2,500  or  more  under the
Withdrawal Plan,  withdrawals made  concurrently  with purchases  of  additional
shares  may  be  inadvisable because  of  the contingent  deferred  sales charge
applicable to the redemption of shares purchased during the preceding six  years
(see "Redemptions and Repurchases -- Contingent Deferred Sales Charge").
 
    The  Transfer Agent acts  as agent for  the shareholder in  tendering to the
Fund for redemption sufficient full and fractional shares to provide the  amount
of  the periodic  withdrawal payment designated  in the  application. The shares
will be  redeemed at  their net  asset value  determined, at  the  shareholder's
option, on the tenth or twenty-fifth day (or next following business day) of the
relevant  month or quarter and normally a  check for the proceeds will be mailed
by the Transfer  Agent, or  amounts credited  to a  shareholder's DWR  brokerage
account,  within five business days after the date of redemption. The Withdrawal
Plan may be terminated at any time by the Fund.
 
    Any shareholder who wishes to have  payments under the Withdrawal Plan  made
to  a  third party,  or sent  to an  address other  than the  one listed  on the
account, must send complete written instructions to the Transfer Agent to enroll
in the Withdrawal Plan. The shareholder's signature on such instructions must be
guaranteed  by  an   eligible  guarantor  acceptable   to  the  Transfer   Agent
(shareholders  should  contact  the Transfer  Agent  for a  determination  as to
whether a particular institution is  such an eligible guarantor). A  shareholder
may,  at any time, change the amount and interval of withdrawal payments through
his or her account executive or  by written notification to the Transfer  Agent.
In  addition, the  party and/or the  address to  which checks are  mailed may be
changed by written notification to the Transfer Agent, with signature guarantees
required in the manner described above.  The shareholder may also terminate  the
Withdrawal  Plan at  any time by  written notice  to the Transfer  Agent. In the
event  of  such  termination,  the  account  will  be  continued  as  a  regular
shareholder  investment account. The shareholder may  also redeem all or part of
the  shares  held  in  the   Withdrawal  Plan  account  (see  "Redemptions   and
Repurchases" in the Prospectus) at any time.
 
    DIRECT INVESTMENT THROUGH TRANSFER AGENT.  As discussed in the Prospectus, a
shareholder  may  make additional  investments  in Fund  shares  at any  time by
sending a  check in  any amount,  not less  than $100,  payable to  Dean  Witter
Dividend  Growth Securities  Inc., directly to  the Fund's  Transfer Agent. Such
amounts will be applied to  the purchase of Fund shares  at the net asset  value
per  share next computed after  receipt of the check  or purchase payment by the
Transfer Agent.  The shares  so purchased  will be  credited to  the  investor's
account.
 
EXCHANGE PRIVILEGE
 
    As discussed in the Prospectus, the Fund makes available to its shareholders
an Exchange Privilege whereby shareholders of the Fund may exchange their shares
for  shares of  other Dean  Witter Funds sold  with a  contingent deferred sales
charge   ("CDSC   funds"),   for   shares   of   Dean   Witter   Limited    Term
 
                                       21
<PAGE>
Municipal  Trust, Dean Witter Short-Term Bond  Fund, Dean Witter Short-Term U.S.
Treasury Trust, Dean Witter Intermediate  Term U.S. Treasury Trust, Dean  Witter
Balanced  Growth Fund,  Dean Witter  Balanced Income  Fund and  five Dean Witter
Funds which are  money market  funds (the  foregoing eleven  non-CDSC funds  are
hereinafter  referred to as  the "Exchange Funds"). Exchanges  may be made after
the shares  of  the Fund  acquired  by purchase  (not  by exchange  or  dividend
reinvestment)  have been held  for thirty days.  There is no  waiting period for
exchanges of shares acquired by  exchange or dividend reinvestment. An  exchange
will  be treated  for federal income  tax purposes  the same as  a repurchase or
redemption of shares,  on which the  shareholder may realize  a capital gain  or
loss.
 
    Any  new account  established through the  Exchange Privilege  will have the
same registration and cash dividend or dividend reinvestment plan as the present
account,  unless  the  Transfer  Agent  receives  written  notification  to  the
contrary.  For  telephone  exchanges,  the exact  registration  of  the existing
account and the account number must be provided.
 
    Any shares  held  in  certificate  form cannot  be  exchanged  but  must  be
forwarded  to the  Transfer Agent and  deposited into  the shareholder's account
before being eligible for exchange.  (Certificates mailed in for deposit  should
not be endorsed.)
 
    As  described  below, and  in the  Prospectus  under the  captions "Exchange
Privilege" and "Contingent Deferred Sales  Charge", a contingent deferred  sales
charge  ("CDSC") may  be imposed  upon a  redemption, depending  on a  number of
factors, including the number of years from the time of purchase until the  time
of  redemption or exchange  ("holding period"). When  shares of the  Fund or any
other CDSC fund are exchanged  for shares of an  Exchange Fund, the exchange  is
executed  at no charge to the shareholder, without the imposition of the CDSC at
the time of the exchange. During the  period of time the shareholder remains  in
the  Exchange  Fund (calculated  from the  last day  of the  month in  which the
Exchange Fund were acquired), the holding period or "year since purchase payment
made" is frozen. When shares are redeemed out of the Exchange Fund they will  be
subject  to a CDSC which would be based  upon the period of time the shareholder
held shares in a CDSC fund. However, in the case of shares of the Fund exchanged
into an Exchange Fund on  or after April 23, 1990,  upon a redemption of  shares
which results in a CDSC being imposed, a credit (not to exceed the amount of the
CDSC)  will be given in an amount  equal to the Exchange Fund 12b-1 distribution
fees incurred on  or after  that date which  are attributable  to those  shares.
Shareholders  acquiring shares  of an  Exchange Fund  pursuant to  this exchange
privilege may exchange  those shares  back into a  CDSC fund  from the  Exchange
Fund,  with  no  charge  being  imposed on  such  exchange.  The  holding period
previously frozen when shares  were first exchanged for  shares of the  Exchange
Fund  resumes on the last  day of the month  in which shares of  a CDSC fund are
reacquired. A CDSC is imposed only  upon an ultimate redemption, based upon  the
time  (calculated as  discribed above)  the shareholder  was invested  in a CDSC
fund.
 
    In addition, shares of the  Fund may be acquired  in exchange for shares  of
Dean  Witter Funds sold  with a front-end sales  charge ("front-end sales charge
funds") but  shares of  the Fund,  however acquired,  may not  be exchanged  for
shares  of  front-end sales  charge funds.  Shares  of a  CDSC fund  acquired in
exchange for shares of a front-end sales charge fund (or in exchange for  shares
of  other Dean Witter  Funds for which  shares of a  front-end sales charge fund
have been exchanged) are not subject to any CDSC upon their redemption.
 
    When shares initially purchased in a  CDSC fund are exchanged for shares  of
another  CDSC fund, or for  shares of an Exchange Fund,  the date of purchase of
the shares of the fund exchanged into, for purposes of the CDSC upon redemption,
will be the  last day  of the  month in which  the shares  being exchanged  were
originally  purchased.  In allocating  the purchase  payments between  funds for
purposes of the CDSC, the amount which represents the current net asset value of
shares at the time of the exchange  which were (i) purchased more than three  or
six  years (depending on the CDSC schedule  applicable to those shares) prior to
the exchange,  (ii) originally  acquired through  reinvestment of  dividends  or
distributions  and  (iii) acquired  in exchange  for  shares of  front-end sales
charge funds, or  for shares  of other  Dean Witter  Funds for  which shares  of
front-end  sales charge funds have been  exchanged (all such shares called "Free
Shares"), will be exchanged first. Shares of Dean Witter
 
                                       22
<PAGE>
American Value  Fund  (formerly  Dean Witter  Industry-Valued  Securities  Inc.)
acquired  prior to April  30, 1984, shares  of the Fund  and Dean Witter Natural
Resource Development Securities Inc. acquired prior to July 2, 1984, and  shares
of  Dean Witter  Strategist Fund  acquired prior to  November 8,  1989, are also
considered Free Shares and will be the first Free Shares to be exchanged.  After
an  exchange,  all  dividends earned  on  shares  in an  Exchange  Fund  will be
considered Free Shares. If the exchanged  amount exceeds the value of such  Free
Shares,  an exchange is made, on a block-by-block basis, of non-Free Shares held
for the longest period of time (except that if shares held for identical periods
of time but subject to  different CDSC schedules are  held in the same  Exchange
Privilege  account, the shares  of that block  that are subject  to a lower CDSC
rate will be exchanged prior to the shares  of that block that are subject to  a
higher  CDSC rate). Shares  equal to any  appreciation in the  value of non-Free
Shares exchanged will be treated as Free Shares, and the amount of the  purchase
payments for the non-Free Shares of the fund exchanged into will be equal to the
lesser  of (a) the purchase payments for, or (b) the current net asset value of,
the exchanged non-Free  Shares. If  an exchange  between funds  would result  in
exchange  of only  part of  a particular block  of non-Free  Shares, then shares
equal to any appreciation  in the value of  the block (up to  the amount of  the
exchange)  will be treated as Free Shares  and exchanged first, and the purchase
payment for  that block  will  be allocated  on a  pro  rata basis  between  the
non-Free  Shares of  that block  to be  retained and  the non-Free  Shares to be
exchanged. The  prorated amount  of such  purchase payment  attributable to  the
retained  non-Free Shares will  remain as the purchase  payment for such shares,
and the amount  of purchase payment  for the exchanged  non-Free Shares will  be
equal  to the lesser of (a) the prorated  amount of the purchase payment for, or
(b) the current net asset value of, those exchanged non-Free Shares. Based  upon
the  procedures  described  in  the  Prospectus  under  the  caption "Contingent
Deferred Sales Charge," any  applicable CDSC will be  imposed upon the  ultimate
redemption  of shares of any  fund, regardless of the  number of exchanges since
those shares were originally purchased.
 
    With respect to  the redemption  or repurchase of  shares of  the Fund,  the
application  of proceeds to the purchase of new  shares in the Fund or any other
of the  funds and  the general  administration of  the Exchange  Privilege,  the
Transfer  Agent  acts as  agent for  the Distributor  and for  the shareholder's
Broker-Dealer, if any, in the performance of such functions.
 
    With respect to  exchanges, redemptions or  repurchases, the Transfer  Agent
shall  be liable for its own negligence and not for the default or negligence of
its correspondents or for losses  in transit. The Fund  shall not be liable  for
any default or negligence of the Transfer Agent, the Distributor or any Selected
Broker-Dealer.
 
    The Distributor and various broker-dealers have authorized and appointed the
Transfer  Agent to  act as  their agent  in connection  with the  application of
proceeds of any redemption of Fund shares to the purchase of shares of any other
fund and the general administration of the Exchange Privilege. No commission  or
discounts  will  be  paid  to  the  Distributor  or  any  broker-dealer  for any
transactions pursuant to this Exchange Privilege.
 
    Exchanges are subject to  the minimum investment  requirement and any  other
conditions  imposed by each fund. (The  minimum initial investment is $5,000 for
Dean Witter Liquid  Asset Fund Inc.,  Dean Witter Tax-Free  Daily Income  Trust,
Dean  Witter New  York Municipal Money  Market Trust and  Dean Witter California
Tax-Free Daily  Income Trust  although  those funds  may, at  their  discretion,
accept  initial investments of as low  as $1,000. The minimum initial investment
is $10,000 for Dean Witter Short-Term  U.S. Treasury Trust, although that  fund,
in  its discretion, may accept  purchases as low as  $5,000. The minimum initial
investment for all other Dean Witter  Funds for which the Exchange Privilege  is
available  is $1,000.) Upon  exchange into Dean  Witter Short-Term U.S. Treasury
Trust or a money market fund, the shares of that fund will be held in a  special
Exchange  Privilege Account separately  from accounts of  those shareholders who
have acquired  their  shares directly  from  that  fund. As  a  result,  certain
services  normally available to shareholders of those funds, including the check
writing feature, will not be available for funds held in that account.
 
                                       23
<PAGE>
    The Fund and each  of the other  Dean Witter Funds may  limit the number  of
times  this  Exchange  Privilege  may  be exercised  by  any  investor  within a
specified period of  time. Also,  the Exchange  Privilege may  be terminated  or
revised  at any time by the  Fund and/or any of the  Dean Witter Funds for which
shares of the Fund have been exchanged,  upon such notice as may be required  by
applicable regulatory agencies (presently sixty days for termination or material
revision), provided that six months' prior written notice of termination will be
given  to the shareholders  who hold shares  of Exchange Funds  pursuant to this
Exchange Privilege  and provided  further  that the  Exchange Privilege  may  be
terminated  or materially revised without notice at  times (a) when the New York
Stock Exchange is  closed for other  than customary weekends  and holidays,  (b)
when  trading on that Exchange is restricted,  (c) when an emergency exists as a
result of which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund fairly to determine
the value of its net assets, (d) during any other period when the Securities and
Exchange Commission  by order  so permits  (provided that  applicable rules  and
regulations of the Securities and Exchange Commission shall govern as to whether
the  conditions prescribed  in (b)  or (c) exist)  or (e)  if the  Fund would be
unable  to  invest  amounts  effectively  in  accordance  with  its   investment
objective, policies and restrictions.
 
    For  further  information  regarding  the  Exchange  Privilege, shareholders
should contact their DWR  or other selected  broker-dealer account executive  or
the Transfer Agent.
 
REDEMPTIONS AND REPURCHASES
- --------------------------------------------------------------------------------
 
    REDEMPTION.  As stated in the Prospectus, shares of the Fund can be redeemed
for  cash at any time at the net asset value per share next determined; however,
such redemption  proceeds  may  be  reduced by  the  amount  of  any  applicable
contingent  deferred  sales  charges  (see  below).  If  shares  are  held  in a
shareholder's account  without  a  share  certificate,  a  written  request  for
redemption  to the Fund's Transfer Agent at  P.O. Box 983, Jersey City, NJ 07303
is required. if  certificates are  held by the  shareholder, the  shares may  be
redeemed by surrendering the certificates with a written request for redemption.
The  share  certificate, or  an accompanying  stock power,  and the  request for
redemption, must be  signed by the  shareholder or shareholders  exactly as  the
shares  are registered. Each request for  redemption, whether or not accompanied
by a share certificate, must  be sent to the  Fund's Transfer Agent, which  will
redeem  the shares at their net asset value next computed (see "Purchase of Fund
Shares" in the Prospectus)  after it receives the  request, and certificate,  if
any,  in good order. Any redemption request received after such computation will
be redeemed at the next determined net asset value. The term "good order"  means
that  the share  certificate, if  any, and  request for  redemption are properly
signed, accompanied by  any documentation  required by the  Transfer Agent,  and
bear  signature guarantees when required  by the Fund or  the Transfer Agent. If
redemption is requested by a  corporation, partnership, trust or fiduciary,  the
Transfer  Agent may require that written evidence of authority acceptable to the
Transfer Agent be submitted before such request is accepted.
 
    Whether certificates are  held by the  shareholder or shares  are held in  a
shareholder's  account, if the proceeds are to  be paid to any person other than
the record owner, or if the proceeds are to be paid to a corporation (other than
the Distributor or a selected broker-dealer for the account of the shareholder),
partnership, trust or fiduciary, or sent to the shareholder at an address  other
than  the  registered  address, signatures  must  be guaranteed  by  an eligible
guarantor acceptable  to the  Transfer Agent  (shareholders should  contact  the
Transfer  Agent for  a determination as  to whether a  particular institution is
such an eligible guarantor). A  stock power may be  obtained from any dealer  or
commercial  bank. The Fund may change  the signature guarantee requirements from
time to  time upon  notice to  shareholders,  which may  be by  means of  a  new
prospectus.
 
    CONTINGENT DEFERRED SALES CHARGE.  As stated in the Prospectus, a contingent
deferred sales charge ("CDSC") will be imposed on any redemption by an investor,
if,  after such redemption,  the current value  of the investor's  shares of the
Fund is less than the dollar amount  of all payments by the shareholder for  the
purchase of Fund shares during the preceding six years. However, no CDSC will be
imposed  to the extent that the net asset  value of the shares redeemed does not
exceed: (a) the current
 
                                       24
<PAGE>
net asset value of shares purchased more than six years prior to the redemption,
plus (b) the current net asset value of shares purchased through reinvestment of
dividends or  distributions  of  the  Fund or  another  Dean  Witter  Fund  (see
"Shareholder  Services -- Targeted  Dividends"), plus (c)  the current net asset
value of shares  acquired in exchange  for (i) shares  of Dean Witter  front-end
sales  charge funds, or (ii) shares of  other Dean Witter Funds for which shares
of front-end sales charge funds  have been exchanged (see "Shareholder  Services
- --  Exchange  Privilege"), plus  (d) increases  in  the net  asset value  of the
investor's shares above the  total amount of payments  for the purchase of  Fund
shares made during the preceding six years. In addition, no CDSC will be imposed
on  redemptions of  shares which  were purchased  by the  employee benefit plans
established by DWR and SPS Transaction Services, Inc. (an affiliate of DWR)  for
their  employees as qualified under Section 401(k) of the Internal Revenue Code.
The CDSC will be paid to the Distributor.
 
    In determining the applicability of the CDSC to each redemption, the  amount
which  represents an increase  in the net  asset value of  the investor's shares
above the amount of  the total payments  for the purchase  of shares within  the
last  six  years will  be redeemed  first.  In the  event the  redemption amount
exceeds such increase in value, the next portion of the amount redeemed will  be
the  amount  which  represents the  net  asset  value of  the  investor's shares
purchased more than six  years prior to the  redemption and/or shares  purchased
through  reinvestment of  dividends or  distributions and/or  shares acquired in
exchange for shares of Dean Witter front-end sales charge funds or for shares of
other Dean Witter funds  for which shares of  front-end sales charge funds  have
been  exchanged. A portion of the amount  redeemed which exceeds an amount which
represents both such increase  in value and the  value of shares purchased  more
than  six  years  prior  to  the  redemption  and/or  shares  purchased  through
reinvestment of  dividends  or  distributions  and/or  shares  acquired  in  the
above-described exchanges will be subject to a CDSC.
 
    The  amount of the CDSC, if any, will  vary depending on the number of years
from the time  of payment  for the  purchase of Fund  shares until  the time  of
redemption  of such shares. For purposes of determining the number of years from
the time of any payment for the  purchase of shares, all payments made during  a
month  will be aggregated  and deemed to have  been made on the  last day of the
month. The following table sets forth the rates of the CDSC:
 
<TABLE>
<CAPTION>
                                                                                    CONTINGENT DEFERRED
      YEAR SINCE                                                                      SALES CHARGE AS
       PURCHASE                                                                       A PERCENTAGE OF
     PAYMENT MADE                                                                     AMOUNT REDEEMED
- ----------------------------------------------------------------------------------  --------------------
<S>                                                                                 <C>
First.............................................................................          5.0%
Second............................................................................          4.0%
Third.............................................................................          3.0%
Fourth............................................................................          2.0%
Fifth.............................................................................          2.0%
Sixth.............................................................................          1.0%
Seventh and thereafter............................................................          None
</TABLE>
 
    In determining the rate of the CDSC, it will be assumed that a redemption is
made of shares held by  the investor for the longest  period of time within  the
applicable  six-year period. This will result in  any such CDSC being imposed at
the  lowest  possible  rate.  Accordingly,  shareholders  may  redeem,   without
incurring  any CDSC,  amounts equal to  any net  increase in the  value of their
shares above the  amount of  their purchase payments  made within  the past  six
years  and amounts equal to the current  value of shares purchased more than six
years prior  to the  redemption  and shares  purchased through  reinvestment  of
dividends  or distributions  or acquired in  exchange for shares  of Dean Witter
front-end sales charge funds, or for shares of other Dean Witter Funds for which
shares of front-end  sales charge funds  have been exchanged.  The CDSC will  be
imposed, in accordance with the table shown above, on any redemptions within six
years of purchase which are in excess of these amounts and which redemptions are
not  (a)  requested  within  one  year  of  death  or  initial  determination of
disability  of  a  shareholder,  or   (b)  made  pursuant  to  certain   taxable
distributions  from retirement plans or retirement accounts, as described in the
Prospectus.
 
                                       25
<PAGE>
    PAYMENT FOR SHARES REDEEMED OR REPURCHASED.  As discussed in the Prospectus,
payment for shares presented for repurchase or redemption will be made by  check
within  seven days after receipt by the Transfer Agent of the certificate and/or
written request  in good  order. The  term  "good order"  means that  the  share
certificate, if any, and request for redemption are properly signed, accompanied
by  any  documentation  required  by  the  Transfer  Agent,  and  bear signature
guarantees when required by the Fund or the Transfer Agent. Such payment may  be
postponed  or the right of  redemption suspended at times  (a) when the New York
Stock Exchange is  closed for other  than customary weekends  and holidays,  (b)
when  trading on that Exchange is restricted,  (c) when an emergency exists as a
result of which disposal by the Fund of securities owned by it is not reasonably
practicable or it is not reasonably practicable for the Fund fairly to determine
the value of its net assets, or (d) during any other period when the  Securities
and  Exchange Commission by order so permits; provided that applicable rules and
regulations of the Securities and Exchange Commission shall govern as to whether
the conditions prescribed in (b) or (c) exist. If the shares to be redeemed have
recently been  purchased  by check  (including  a certified  or  bank  cashier's
check),  payment  of redemption  proceeds may  be delayed  for the  minimum time
needed to verify that the check used  for investment has been honored (not  more
than  fifteen days from the time of receipt of the check by the Transfer Agent).
Shareholders  maintaining  margin   accounts  with  DWR   or  another   selected
broker-dealer  are referred to their account executive regarding restrictions on
redemption of shares of the Fund pledged in the margin accounts.
 
    TRANSFERS OF SHARES.  In the event a shareholder requests a transfer of  any
shares  to a  new registration,  such shares  will be  transferred without sales
charge at the time of  transfer. With regard to the  status of shares which  are
either  subject to the contingent  deferred sales charge or  free of such charge
(and with regard to the  length of time shares subject  to the charge have  been
held),  any transfer involving  less than all  the shares in  an account will be
made on a pro-rata basis (that is, by transferring shares in the same proportion
that the transferred shares bear to the total shares in the account  immediately
prior  to the transfer). The  transferred shares will continue  to be subject to
any applicable  contingent deferred  sales charge  as if  they had  not been  so
transferred.
 
    REINSTATEMENT  PRIVILEGE.  As discussed in the Prospectus, a shareholder who
has had  his  or her  shares  redeemed or  repurchased  and has  not  previously
exercised  this reinstatement privilege may reinstate  any portion or all of the
proceeds of such redemption or repurchase in shares of the Fund at the net asset
value next determined after a reinstatement request, together with the proceeds,
is received by the Transfer Agent.
 
    Exercise of the reinstatement privilege  will not affect the federal  income
tax  treatment of any gain  or loss realized upon  the redemption or repurchase,
except that if the redemption or repurchase resulted in a loss and reinstatement
is made in shares of the Fund, some or all of the loss, depending on the  amount
reinstated,  will not be allowed as a  deduction for federal income tax purposes
but will  be applied  to  adjust the  cost basis  of  the shares  acquired  upon
reinstatement.
 
DIVIDENDS, DISTRIBUTIONS AND TAXES
- --------------------------------------------------------------------------------
 
    As  discussed in the Prospectus  under "Dividends, Distributions and Taxes,"
the Fund will determine either to distribute or to retain all or part of any net
long-term capital gains  in any  year for reinvestment.  If any  such gains  are
retained, the Fund will pay federal income tax thereon, and shareholders will be
able  to claim their share of the tax paid by the Fund as a credit against their
individual federal income tax.
 
    Gains or losses on sales of securities by the Fund will be long-term capital
gains or losses if the securities have been  held by the Fund for more than  one
year.  Gains or losses on the sale of  securities held for one year or less will
be short-term gains or losses.
 
    The Fund  has qualified  and  intends to  remain  qualified as  a  regulated
investment  company  under Subchapter  M  of the  Internal  Revenue Code.  If so
qualified, the  Fund will  not  be subject  to federal  income  tax on  its  net
investment  income and net short-term capital gains, if any, realized during any
fiscal year to the extent that it  distributes such income and capital gains  to
its shareholders.
 
                                       26
<PAGE>
    Dividends  and  interest  received  by  the  Fund  with  respect  to foreign
securities in its portfolio may give rise to withholding and other taxes imposed
by foreign countries. Tax conventions  between certain countries and the  United
States may reduce or eliminate such taxes.
 
    Any  dividend or capital  gains distribution received  by a shareholder from
any investment company will have the effect  of reducing the net asset value  of
the  shareholder's stock in that company by  the exact amount of the dividend or
capital gains distribution.  Furthermore, capital gains  distributions and  some
portion  of the dividends are subject to  federal income taxes. If the net asset
value of the shares should be reduced below a shareholder's cost as a result  of
the  payment  of dividends  or the  distribution  of realized  long-term capital
gains, such distribution would  be in part a  return of capital but  nonetheless
would  be taxable to the shareholder. Therefore, an investor should consider the
tax implications of purchasing Fund  shares immediately prior to a  distribution
record date.
 
    Shareholders  are urged to consult their attorneys or tax advisers regarding
specific questions as to federal, state or local taxes.
 
PERFORMANCE INFORMATION
- --------------------------------------------------------------------------------
 
    As discussed in the  Prospectus, from time  to time the  Fund may quote  its
"total  return"  in advertisements  and  sales literature.  The  Fund's "average
annual total return" represents an annualization of the Fund's total return over
a particular period and is computed by finding the annual percentage rate  which
will  result in the ending redeemable  value of a hypothetical $1,000 investment
made at the beginning of a one, five or ten year period, or for the period  from
the  date of commencement of  the Fund's operations, if  shorter than any of the
foregoing. The ending  redeemable value  is reduced by  any contingent  deferred
sales  charge ("CDSC") at the end of the  one, five or ten year or other period.
For the  purpose of  this calculation,  it  is assumed  that all  dividends  and
distributions are reinvested. The formula for computing the average annual total
return involves a percentage obtained by dividing the ending redeemable value by
the  amount of the initial investment, taking  a root of the quotient (where the
root is equivalent to the number of years in the period) and subtracting 1  from
the result.
 
    The  average annual total returns of the Fund for the one, five and ten year
periods ended February 29, 1996, were 25.01%, 13.63% and 12.98%, respectively.
 
    In addition to the foregoing, the  Fund may advertise its total return  over
different  periods of time by means of aggregate, average, year-by-year or other
types of total  return figures.  Such calculations may  or may  not reflect  the
deduction  of the CDSC which, if reflected, would reduce the performance quoted.
For example, the average annual  total return of the  Fund may be calculated  in
the manner described above, but without deduction for any applicable CDSC. Based
on  this calculation, the average annual total  returns of the Fund for the one,
five and  ten year  periods ended  February 29,  1996, were  30.01%, 13.87%  and
12.98%, respectively.
 
    In  addition, the Fund may compute  its aggregate total return for specified
periods by determining the  aggregate percentage rate which  will result in  the
ending  value of a hypothetical  $1,000 investment made at  the beginning of the
period. For the purpose  of this calculation, it  is assumed that all  dividends
and  distributions  are reinvested.  The formula  for computing  aggregate total
return involves a percentage obtained by dividing the ending value (without  the
reduction  for any CDSC) by the initial $1,000 investment and subtracting 1 from
the result. Based on the foregoing calculation, the Fund's total return for  the
one,  five and ten year periods ended February 29, 1996, were 30.01%, 91.45% and
238.90%, respectively.
 
    The Fund  may also  advertise the  growth of  a hypothetical  investment  of
$10,000,  $50,000 and $100,000 in  shares of the Fund by  adding 1 to the Fund's
aggregate total return to date (expressed  as a decimal and without taking  into
account  the effect of any applicable  CDSC) and multiplying by $10,000, $50,000
or $100,000.  Investments  of $10,000,  $50,000  and  $100,000 in  the  Fund  at
inception would have grown to $79,504, $397,520 and $795,040, respectively.
 
                                       27
<PAGE>
    The  Fund from time to  time may also advertise  its performance relative to
certain performance rankings and indexes compiled by independent organizations.
 
SHARES OF THE FUND
- --------------------------------------------------------------------------------
 
    The Fund is authorized to issue 500,000,000 shares of common stock of  $0.01
par  value. Shares  of the  Fund, when  issued, are  fully paid, non-assessable,
fully transferrable  and redeemable  at the  option of  the holder.  Except  for
agreements  entered into by the  Fund in its ordinary  course of business within
the limitations  of the  Fund's fundamental  investment policies  (which may  be
modified only by shareholder vote), the Fund will not issue any securities other
than common stock.
 
    The  shares of the  Fund do not  have cumulative voting  rights, which means
that the holders  of more  than 50%  of the shares  voting for  the election  of
directors  can elect 100% of the directors if  they choose to do so, and in such
event, the holders of the remaining shares voting for the election of  directors
will not be able to elect any person or persons to the Board of Directors.
 
CUSTODIAN AND TRANSFER AGENT
- --------------------------------------------------------------------------------
 
    The  Bank of New York, 90 Washington Street, New York, New York 10286 is the
Custodian of  the  Fund's assets.  Any  of the  Fund's  cash balances  with  the
Custodian  in excess of  $100,000 are unprotected  by federal deposit insurance.
Such balances may, at times, be substantial.
 
    Dean Witter Trust  Company, Harborside Financial  Center, Plaza Two,  Jersey
City,  New Jersey 07311 is the Transfer  Agent of the Fund's shares and Dividend
Disbursing Agent for payment of dividends  and distributions on Fund shares  and
Agent  for shareholders  under various  investment plans  described herein. Dean
Witter Trust  Company is  an affiliate  of Dean  Witter InterCapital  Inc.,  the
Fund's  Investment  Manager  and  Dean  Witter  Distributors  Inc.,  the  Fund's
Distributor. As Transfer Agent and Dividend Disbursing Agent, Dean Witter  Trust
Company's  responsibilities include maintaining  shareholder accounts, including
providing  subaccounting  and  recordkeeping  services  for  certain  retirement
accounts;  disbursing  cash  dividends  and  reinvesting  dividends;  processing
account registration  changes; handling  purchase and  redemption  transactions;
mailing  prospectuses and  reports; mailing  and tabulating  proxies; processing
share certificate transactions; and  maintaining shareholder records and  lists.
For these services, Dean Witter Trust Company receives a per shareholder account
fee from the Fund.
 
INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
 
    Price  Waterhouse LLP, 1177 Avenue of the Americas, New York, New York 10036
serves as the independent accountants  of the Fund. The independent  accountants
are responsible for auditing the annual financial statements of the Fund.
 
REPORTS TO SHAREHOLDERS
- --------------------------------------------------------------------------------
 
    The  Fund will send to shareholders, at least semi-annually, reports showing
the Fund's  portfolio  and  other  information.  An  annual  report,  containing
financial  statements audited  by the independent  accountants, will  be sent to
shareholders each year.
 
    The Fund's  fiscal year  ends on  the last  day of  February. The  financial
statements  of the  Fund must  be audited  at least  once a  year by independent
accountants whose selection is made annually by the Fund's Board of Directors.
 
                                       28
<PAGE>
LEGAL COUNSEL
- --------------------------------------------------------------------------------
 
    Sheldon Curtis,  Esq., who  is an  officer and  the General  Counsel of  the
Investment Manager, is an officer and the General Counsel of the Fund.
 
EXPERTS
- --------------------------------------------------------------------------------
 
    The financial statements of the Fund included in the Statement of Additional
Information  and  incorporated  by reference  in  the Prospectus,  have  been so
included and incorporated  in reliance on  the report of  Price Waterhouse  LLP,
independent  accountants,  given on  the authority  of said  firm as  experts in
auditing and accounting.
 
REGISTRATION STATEMENT
- --------------------------------------------------------------------------------
 
    This Statement of Additional Information  and the Prospectus do not  contain
all  of the  information set  forth in the  Registration Statement  the Fund has
filed with the  Securities and  Exchange Commission.  The complete  Registration
Statement  may  be obtained  from the  Securities  and Exchange  Commission upon
payment of the fee prescribed by the rules and regulations of the Commission.
 
                                       29
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 29, 1996
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                              VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
             COMMON STOCKS (86.5%)
             AEROSPACE (4.6%)
 1,800,000   Lockheed Martin Corp.............  $     137,250,000
 3,000,000   Raytheon Co......................        150,375,000
 1,550,000   United Technologies Corp.........        166,625,000
                                                -----------------
                                                      454,250,000
                                                -----------------
             ALUMINUM (2.3%)
 2,250,000   Alcan Aluminium Ltd. (Canada)....         68,625,000
 2,670,000   Aluminum Co. of America..........        151,522,500
                                                -----------------
                                                      220,147,500
                                                -----------------
             APPAREL (0.6%)
 1,075,000   VF Corp..........................         57,781,250
                                                -----------------
             AUTO PARTS (1.0%)
 1,125,000   TRW, Inc.........................         97,453,125
                                                -----------------
             AUTO PARTS - AFTER MARKET (1.0%)
 2,105,000   Goodyear Tire & Rubber Co........         99,987,500
                                                -----------------
             AUTOMOTIVE (2.4%)
 3,800,000   Ford Motor Co....................        118,750,000
 2,350,000   General Motors Corp..............        120,437,500
                                                -----------------
                                                      239,187,500
                                                -----------------
             BANKS (5.1%)
 2,050,000   BankAmerica Corp.................        146,062,500
 2,400,000   KeyCorp..........................         90,300,000
 1,500,000   Morgan (J.P.) & Co., Inc.........        122,812,500
 1,900,000   NationsBank Corp.................        140,125,000
                                                -----------------
                                                      499,300,000
                                                -----------------
             BEVERAGES - SOFT DRINKS (3.3%)
 2,025,000   Coca Cola Co.....................        163,518,750
 2,500,000   PepsiCo Inc......................        158,125,000
                                                -----------------
                                                      321,643,750
                                                -----------------
             CHEMICALS (5.5%)
 1,575,000   Dow Chemical Co..................        126,393,750
 1,950,000   Du Pont (E.I.) de Nemours & Co.,
             Inc..............................        149,175,000
 1,350,000   Grace (W.R.) & Co................         93,150,000
 1,250,000   Monsanto Co......................        168,281,250
                                                -----------------
                                                      537,000,000
                                                -----------------
             COAL (0.3%)
   500,000   MAPCO Inc........................         27,250,000
                                                -----------------
             COMPUTERS (1.8%)
 1,400,000   International Business Machines
             Corp.............................        171,675,000
                                                -----------------
 
<CAPTION>
 NUMBER OF
  SHARES                                              VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
             CONGLOMERATES (2.6%)
 1,950,000   Minnesota Mining & Manufacturing
             Co...............................  $     126,993,750
 2,375,000   Tenneco Inc......................        132,703,125
                                                -----------------
                                                      259,696,875
                                                -----------------
             COSMETICS (3.7%)
 1,500,000   Avon Products, Inc...............        120,562,500
 2,950,000   Gillette Co......................        159,668,750
 1,592,500   International Flavors &
             Fragrances Inc...................         79,824,063
                                                -----------------
                                                      360,055,313
                                                -----------------
             DRUGS (7.6%)
 3,300,000   Abbott Laboratories..............        137,775,000
 1,600,000   American Home Products Corp......        157,600,000
 1,675,000   Bristol-Myers Squibb Co..........        142,584,375
 2,775,000   Schering-Plough Corp.............        155,746,875
 2,800,000   SmithKline Beecham PLC (ADR)
             (United Kingdom).................        153,300,000
                                                -----------------
                                                      747,006,250
                                                -----------------
             ELECTRIC - MAJOR (2.4%)
 1,900,000   General Electric Co..............        143,450,000
 5,000,000   Westinghouse Electric Corp.......         92,500,000
                                                -----------------
                                                      235,950,000
                                                -----------------
             FINANCE (1.5%)
 1,000,000   Beneficial Corp..................         52,000,000
 1,360,000   Household International, Inc.....         91,460,000
                                                -----------------
                                                      143,460,000
                                                -----------------
             FINANCIAL - MISCELLANEOUS (1.2%)
 3,800,400   Federal National Mortgage
             Assoc............................        120,187,650
                                                -----------------
             FOODS (1.0%)
 2,900,000   Quaker Oats Company (The)........         99,687,500
                                                -----------------
             HOUSEHOLD APPLIANCES (0.8%)
 1,400,000   Whirlpool Corp...................         77,875,000
                                                -----------------
             INSURANCE (2.4%)
 1,700,000   Aetna Life & Casualty Co.........        128,562,500
 1,925,000   Lincoln National Corp............        105,875,000
                                                -----------------
                                                      234,437,500
                                                -----------------
             MACHINERY - AGRICULTURAL (1.7%)
 4,200,000   Deere & Co.......................        164,325,000
                                                -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       30
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 29, 1996, CONTINUED
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                              VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
             MANUFACTURING - DIVERSIFIED (1.2%)
 2,250,000   Honeywell, Inc...................  $     119,250,000
                                                -----------------
             METALS & MINING (1.0%)
 1,600,000   Phelps Dodge Corp................         97,800,000
                                                -----------------
             NATURAL GAS (2.8%)
 1,650,000   Burlington Resources, Inc........         60,018,750
   650,000   El Paso Natural Gas Co...........         21,937,500
 3,050,000   ENRON Corp.......................        111,706,250
 2,000,000   NorAm Energy Corp................         18,000,000
 2,250,000   Panhandle Eastern Corp...........         64,406,250
                                                -----------------
                                                      276,068,750
                                                -----------------
             OFFICE EQUIPMENT (2.5%)
 2,400,000   Pitney Bowes, Inc................        115,800,000
 1,025,000   Xerox Corp.......................        133,506,250
                                                -----------------
                                                      249,306,250
                                                -----------------
             OIL - DOMESTIC (2.4%)
 1,750,000   Amoco Corp.......................        121,625,000
 1,000,000   Atlantic Richfield Co............        109,500,000
                                                -----------------
                                                      231,125,000
                                                -----------------
             OIL INTEGRATED - INTERNATIONAL (4.2%)
 1,675,000   Exxon Corp.......................        133,162,500
 1,300,000   Mobil Corp.......................        142,512,500
   975,000   Royal Dutch Petroleum Co. (ADR)
             (Netherlands)....................        134,306,250
                                                -----------------
                                                      409,981,250
                                                -----------------
             PAPER & FOREST PRODUCTS (1.1%)
 2,450,000   Weyerhaeuser Co..................        103,818,750
                                                -----------------
             PHOTOGRAPHY (1.6%)
 2,175,000   Eastman Kodak Co.................        155,512,500
                                                -----------------
             RAILROADS (3.7%)
 1,575,000   Burlington Northern Santa Fe
             Corp.............................        126,000,000
 1,700,000   Conrail, Inc.....................        122,612,500
 2,500,000   CSX Corp.........................        112,187,500
                                                -----------------
                                                      360,800,000
                                                -----------------
             RETAIL (1.1%)
 1,450,000   Dayton-Hudson Corp...............        107,843,750
                                                -----------------
             RETAIL - DEPARTMENT STORES (1.2%)
 2,550,000   May Department Stores Co.........        118,893,750
                                                -----------------
 
<CAPTION>
 NUMBER OF
  SHARES                                              VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
             SOAP & HOUSEHOLD PRODUCTS (1.6%)
 1,850,000   Procter & Gamble Co..............  $     151,700,000
                                                -----------------
             TELECOMMUNICATIONS (1.0%)
 3,000,000   U.S. West, Inc...................         98,250,000
                                                -----------------
             TELEPHONES (4.1%)
 1,750,000   Bell Atlantic Corp...............        115,718,750
 3,000,000   GTE Corp.........................        128,625,000
 3,750,000   Sprint Corp......................        161,250,000
                                                -----------------
                                                      405,593,750
                                                -----------------
             UTILITIES - ELECTRIC (4.2%)
 2,425,000   FPL Group, Inc...................        108,215,625
 4,500,000   Houston Industries, Inc..........        101,812,500
 3,650,000   Pacific Gas & Electric Co........         93,531,250
 3,300,000   Unicom Corp......................        105,600,000
                                                -----------------
                                                      409,159,375
                                                -----------------
 
             TOTAL COMMON STOCKS
             (IDENTIFIED COST
             $4,731,564,454)..................      8,463,459,838
                                                -----------------
</TABLE>
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS                                            VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
 
             U.S. GOVERNMENT OBLIGATIONS (11.9%)
 $  50,000   U.S. Treasury Bond
             8.125% due 08/15/19..............         58,718,750
    90,000   U.S. Treasury Bond
             8.00% due 11/15/21...............        104,850,000
    50,000   U.S. Treasury Bond
             7.125% due 02/15/23..............         53,039,063
   525,000   U.S. Treasury Bond
             6.25% due 08/15/23...............        499,898,437
   450,000   U.S. Treasury Bond
             6.00% due 02/15/26...............        421,453,125
    25,000   U.S. Treasury Note
             8.00% due 05/15/01...............         27,457,031
                                                -----------------
 
             TOTAL U.S. GOVERNMENT OBLIGATIONS
             (IDENTIFIED COST
             $1,167,380,687)..................      1,165,416,406
                                                -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       31
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
PORTFOLIO OF INVESTMENTS FEBRUARY 29, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS                                            VALUE
- -----------------------------------------------------------------
<C>          <S>                                <C>
             SHORT-TERM INVESTMENTS (a) (1.1%)
             COMMERCIAL PAPER
             AEROSPACE (0.2%)
 $  20,000   Raytheon Co.
             5.21% due 03/05/96...............  $      19,988,444
                                                -----------------
             AUTOMOTIVE - FINANCE (0.3%)
    28,400   Ford Motor Credit Co.
             5.21% due 03/12/96 to
             03/18/96.........................         28,340,740
                                                -----------------
             FINANCE - DIVERSIFIED (0.6%)
    55,650   General Electric Capital Corp.
             5.21% to 5.28% due 03/07/96 to
             03/14/96.........................         55,564,823
                                                -----------------
 
             TOTAL SHORT-TERM INVESTMENTS
             (AMORTIZED COST $103,894,007)....        103,894,007
                                                -----------------
 
TOTAL INVESTMENTS
(IDENTIFIED COST
$6,002,839,148) (B)........       99.5%  9,732,770,251
 
CASH AND OTHER ASSETS IN
EXCESS OF LIABILITIES......        0.5      49,335,726
                                 -----   -------------
 
NET ASSETS.................      100.0%  $9,782,105,977
                                 -----   -------------
                                 -----   -------------
 
<FN>
- ---------------------
ADR  American Depository Receipt.
(a)  Securities were purchased on a discount basis. The interest rates shown
     have been adjusted to reflect a money market equivalent yield.
(b)  The aggregate cost for federal income tax purposes is $6,002,839,148; the
     aggregate gross unrealized appreciation is $3,778,664,589 and the
     aggregate gross unrealized depreciation is $48,733,486, resulting in net
     unrealized appreciation of $3,729,931,103.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       32
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
FEBRUARY 29, 1996
 
<TABLE>
<S>                                                           <C>
ASSETS:
Investments in securities, at value
  (identified cost $6,002,839,148)..........................  $9,732,770,251
Cash........................................................          34,657
Receivable for:
    Dividends...............................................      34,813,375
    Capital stock sold......................................      23,480,714
    Interest................................................       5,483,413
Prepaid expenses and other assets...........................         164,719
                                                              --------------
 
     TOTAL ASSETS...........................................   9,796,747,129
                                                              --------------
 
LIABILITIES:
Payable for:
    Plan of distribution fee................................       5,759,357
    Capital stock repurchased...............................       4,635,971
    Investment management fee...............................       3,142,892
Accrued expenses and other payables.........................       1,102,932
                                                              --------------
 
     TOTAL LIABILITIES......................................      14,641,152
                                                              --------------
 
NET ASSETS:
Paid-in-capital.............................................   5,973,046,655
Net unrealized appreciation.................................   3,729,931,103
Accumulated undistributed net investment income.............      61,941,516
Accumulated undistributed net realized gain.................      17,186,703
                                                              --------------
 
     NET ASSETS.............................................  $9,782,105,977
                                                              --------------
                                                              --------------
 
NET ASSET VALUE PER SHARE,
  246,728,139 SHARES OUTSTANDING (500,000,000 SHARES
  AUTHORIZED OF $.01 PAR VALUE).............................
                                                                      $39.65
                                                              --------------
                                                              --------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       33
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED FEBRUARY 29, 1996
 
<TABLE>
<S>                                                           <C>
NET INVESTMENT INCOME:
 
INCOME
Dividends (net of $926,417 foreign withholding tax).........  $  223,952,048
Interest....................................................      66,355,603
                                                              --------------
 
     TOTAL INCOME...........................................     290,307,651
                                                              --------------
 
EXPENSES
Plan of distribution fee....................................      66,486,095
Investment management fee...................................      34,849,553
Transfer agent fees and expenses............................       7,443,212
Custodian fees..............................................         421,272
Shareholder reports and notices.............................         385,454
Registration fees...........................................         288,384
Professional fees...........................................          53,423
Directors' fees and expenses................................          26,061
Other.......................................................          76,386
                                                              --------------
 
     TOTAL EXPENSES.........................................     110,029,840
                                                              --------------
 
     NET INVESTMENT INCOME..................................     180,277,811
                                                              --------------
 
NET REALIZED AND UNREALIZED GAIN:
Net realized gain...........................................      17,186,743
Net change in unrealized appreciation.......................   1,976,893,191
                                                              --------------
 
     NET GAIN...............................................   1,994,079,934
                                                              --------------
 
NET INCREASE................................................  $2,174,357,745
                                                              --------------
                                                              --------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       34
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                                FOR THE YEAR        FOR THE YEAR
                                                                    ENDED               ENDED
                                                              FEBRUARY 29, 1996   FEBRUARY 28, 1995
- ---------------------------------------------------------------------------------------------------
<S>                                                           <C>                 <C>
 
INCREASE (DECREASE) IN NET ASSETS:
 
OPERATIONS:
Net investment income.......................................   $    180,277,811    $    163,780,281
Net realized gain...........................................         17,186,743          49,160,950
Net change in unrealized appreciation.......................      1,976,893,191          11,726,441
                                                              -----------------   -----------------
 
     NET INCREASE...........................................      2,174,357,745         224,667,672
                                                              -----------------   -----------------
 
DIVIDENDS AND DISTRIBUTIONS FROM:
Net investment income.......................................       (158,425,268)       (149,556,111)
Net realized gain...........................................        (21,206,038)         --
                                                              -----------------   -----------------
 
     TOTAL..................................................       (179,631,306)       (149,556,111)
                                                              -----------------   -----------------
Net increase from capital stock transactions................        686,811,213         313,758,060
                                                              -----------------   -----------------
 
     TOTAL INCREASE.........................................      2,681,537,652         388,869,621
 
NET ASSETS:
Beginning of period.........................................      7,100,568,325       6,711,698,704
                                                              -----------------   -----------------
 
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF
    $61,941,516 AND $40,088,973, RESPECTIVELY)..............   $  9,782,105,977    $  7,100,568,325
                                                              -----------------   -----------------
                                                              -----------------   -----------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       35
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 29, 1996
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Dean Witter Dividend Growth Securities Inc. (the "Fund") is registered under the
Investment Company Act of 1940, as amended (the "Act"), as a diversified,
open-end management investment company. The Fund's investment objective is to
provide reasonable current income and long-term growth of income and capital.
The Fund seeks to achieve its objective by investing primarily in common stock
of companies with a record of paying dividends and the potential for increasing
dividends. The Fund was incorporated in Maryland on December 22, 1980 and
commenced operations on March 30, 1981.
 
The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates. The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- (1) an equity security listed or traded on the
New York or American Stock Exchange is valued at its latest sale price on that
exchange prior to the time when assets are valued; if there were no sales that
day, the security is valued at the latest bid price; (2) all other portfolio
securities for which over-the-counter market quotations are readily available
are valued at the latest available bid price prior to the time of valuation; (3)
when market quotations are not readily available, including circumstances under
which it is determined by the Investment Manager that sale or bid prices are not
reflective of a security's market value, portfolio securities are valued at
their fair value as determined in good faith under procedures established by and
under the general supervision of the Directors (valuation of debt securities for
which market quotations are not readily available may be based upon current
market prices of securities which are comparable in coupon, rating and maturity
or an appropriate matrix utilizing similar factors); and (4) short-term debt
securities having a maturity date of more than sixty days at time of purchase
are valued on a mark-to-market basis until sixty days prior to maturity and
thereafter at amortized cost based on their value on the 61st day. Short-term
debt securities having a maturity date of sixty days or less at the time of
purchase are valued at amortized cost.
 
B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Dividend income and other distributions are recorded on the ex-dividend date.
Discounts are accreted over the life of the respective securities. Interest
income is accrued daily.
 
                                       36
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 29, 1996, CONTINUED
 
C. FEDERAL INCOME TAX STATUS -- It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.
 
D. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Fund records dividends and
distributions to its shareholders on the ex-dividend date. The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles. These "book/tax"
differences are either considered temporary or permanent in nature. To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment income or distributions in excess of net
realized capital gains. To the extent they exceed net investment income and net
realized capital gains for tax purposes, they are reported as distributions of
paid-in-capital.
 
2. INVESTMENT MANAGEMENT AGREEMENT
 
Pursuant to an Investment Management Agreement with Dean Witter InterCapital
Inc. (the "Investment Manager"), the Fund pays a management fee, accrued daily
and payable monthly, by applying the following annual rates to the net assets of
the Fund determined at the close of each business day: 0.625% to the portion of
daily net assets not exceeding $250 million; 0.50% to the portion of daily net
assets exceeding $250 million but not exceeding $1 billion; 0.475% to the
portion of daily net assets exceeding $1 billion but not exceeding $2 billion;
0.45% to the portion of daily net assets exceeding $2 billion but not exceeding
$3 billion; 0.425% to the portion of daily net assets exceeding $3 billion but
not exceeding $4 billion; 0.40% to the portion of daily net assets exceeding $4
billion but not exceeding $5 billion; 0.375% to the portion of daily net assets
exceeding $5 billion but not exceeding $6 billion; 0.35% to the portion of daily
net assets exceeding $6 billion but not exceeding $8 billion; and 0.325% to the
portion of daily net assets exceeding $8 billion.
 
Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of
 
                                       37
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 29, 1996, CONTINUED
 
all personnel, including officers of the Fund who are employees of the
Investment Manager. The Investment Manager also bears the cost of telephone
services, heat, light, power and other utilities provided to the Fund.
 
3. PLAN OF DISTRIBUTION
 
Shares of the Fund are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Manager. The Fund has adopted a
Plan of Distribution (the "Plan"), pursuant to Rule 12b-1 under the Act,
pursuant to which the Fund pays the Distributor compensation, accrued daily and
payable monthly, at an annual rate of 1.0% of the lesser of: (a) the average
daily aggregate gross sales of the Fund's shares since the implementation of the
Plan on July 2, 1984 (not including reinvestment of dividend or capital gain
distributions) less the average daily aggregate net asset value of the Fund's
shares redeemed since the implementation of the Plan upon which a contingent
deferred sales charge has been imposed or upon which such charge has been
waived; or (b) the Fund's average daily net assets attributable to shares
issued, net of related shares redeemed, since implementation of the Plan.
Amounts paid under the Plan are paid to the Distributor to compensate it for the
services provided and the expenses borne by it and others in the distribution of
the Fund's shares, including the payment of commissions for sales of the Fund's
shares and incentive compensation to, and expenses of, the account executives of
Dean Witter Reynolds Inc. ("DWR"), an affiliate of the Investment Manager and
Distributor, and other employees and selected broker-dealers who engage in or
support distribution of the Fund's shares or who service shareholder accounts,
including overhead and telephone expenses, printing and distribution of
prospectuses and reports used in connection with the offering of the Fund's
shares to other than current shareholders and preparation, printing and
distribution of sales literature and advertising materials. In addition, the
Distributor may be compensated under the Plan for its opportunity costs in
advancing such amounts, which compensation would be in the form of a carrying
charge on any unreimbursed expenses incurred by the Distributor.
 
Provided that the Plan continues in effect, any cumulative expenses incurred but
not yet recovered, may be recovered through future distribution fees from the
Fund and contingent deferred sales charges from the Fund's shareholders.
 
The Distributor has informed the Fund that for the year ended February 29, 1996,
it received approximately $9,400,000 in contingent deferred sales charges from
certain redemptions of the Fund's shares.
 
                                       38
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
NOTES TO FINANCIAL STATEMENTS FEBRUARY 29, 1996, CONTINUED
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended February 29, 1996 aggregated
$1,533,420,557 and $798,106,403, respectively. Included in the aforementioned
are purchases and sales of U.S. Government securities of $1,006,467,882 and
$564,428,125, respectively.
 
For the year ended February 29, 1996, the Fund incurred brokerage commissions of
$402,635 with DWR for portfolio transactions executed on behalf of the Fund.
 
Dean Witter Trust Company, an affiliate of the Investment Manager and
Distributor, is the Fund's transfer agent. At February 29, 1996, the Fund had
transfer agent fees and expenses payable of approximately $617,000.
 
The Fund has an unfunded noncontributory defined benefit pension plan covering
all independent Directors of the Fund who will have served as independent
Directors/Trustees for at least five years at the time of retirement. Benefits
under this plan are based on years of service and compensation during the last
five years of service. Aggregate pension costs for the year ended February 29,
1996, included in Directors' fees and expenses in the Statement of Operations,
amounted to $5,484. At February 29, 1996, the Fund had an accrued pension
liability of $52,580 which is included in accrued expenses in the Statement of
Assets and Liabilities.
 
5. CAPITAL STOCK
 
Transactions in capital stock were as follows:
 
<TABLE>
<CAPTION>
                                                                        FOR THE YEAR ENDED            FOR THE YEAR ENDED
                                                                        FEBRUARY 29, 1996             FEBRUARY 28, 1995
                                                                   ----------------------------   --------------------------
                                                                     SHARES          AMOUNT         SHARES         AMOUNT
                                                                   -----------   --------------   -----------   ------------
<S>                                                                <C>           <C>              <C>           <C>
Sold.............................................................   50,150,972   $1,797,441,027    42,248,385   $1,266,049,401
Reinvestment of dividends and distributions......................    4,681,316      166,381,580     4,679,486    138,588,041
                                                                   -----------   --------------   -----------   ------------
                                                                    54,832,288    1,963,822,607    46,927,871   1,404,637,442
Repurchased......................................................  (35,988,870)  (1,277,011,394)  (36,524,071)  (1,090,879,382)
                                                                   -----------   --------------   -----------   ------------
Net increase.....................................................   18,843,418   $  686,811,213    10,403,800   $313,758,060
                                                                   -----------   --------------   -----------   ------------
                                                                   -----------   --------------   -----------   ------------
</TABLE>
 
                                       39
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
FINANCIAL HIGHLIGHTS
 
Selected  ratios and  per share  data for a  share of  capital stock outstanding
throughout each period:
 
<TABLE>
<CAPTION>
                                                  FOR THE YEAR ENDED FEBRUARY 28
                          ------------------------------------------------------------------------------
                          1996*    1995    1994    1993   1992*    1991    1990    1989   1988*    1987
- --------------------------------------------------------------------------------------------------------
 
<S>                       <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>
PER SHARE OPERATING PERFORMANCE:
 
Net asset value,
 beginning of period..... $31.16  $30.86  $28.70  $27.01  $23.50  $22.47  $20.32  $19.28  $20.63  $17.56
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
Net investment income....   0.75    0.72    0.68    0.70    0.71    0.79    0.72    0.68    0.67    0.51
Net realized and
 unrealized gain
 (loss)..................   8.50    0.24    2.16    1.72    3.63    1.04    2.83    1.78   (0.99)   3.56
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
Total from investment
 operations..............   9.25    0.96    2.84    2.42    4.34    1.83    3.55    2.46   (0.32)   4.07
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
Less dividends and
 distributions from:
   Net investment
   income................  (0.67)  (0.66)  (0.68)  (0.69)  (0.76)  (0.80)  (0.76)  (0.62)  (0.73)  (0.52)
   Net realized gain.....  (0.09)   --      --     (0.04)  (0.07)   --     (0.64)  (0.80)  (0.30)  (0.48)
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
Total dividends and
 distributions...........  (0.76)  (0.66)  (0.68)  (0.73)  (0.83)  (0.80)  (1.40)  (1.42)  (1.03)  (1.00)
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
Net asset value, end of
 period.................. $39.65  $31.16  $30.86  $28.70  $27.01  $23.50  $22.47  $20.32  $19.28  $20.63
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
 
TOTAL INVESTMENT
RETURN+..................  30.01%   3.25%   9.98%   9.13%  18.82%   8.51%  17.85%  13.26%  (1.40)%  23.96%
 
RATIOS TO AVERAGE NET
ASSETS:
Expenses.................   1.31%   1.42%   1.37%   1.40%   1.42%   1.51%   1.41%   1.55%   1.55%   1.52%
 
Net investment income....   2.14%   2.42%   2.31%   2.67%   2.91%   3.62%   3.46%   3.44%   3.47%   3.35%
 
SUPPLEMENTAL DATA:
Net assets, end of
 period, in millions..... $9,782  $7,101  $6,712  $5,386  $4,071  $3,015  $2,760  $1,860  $1,824  $1,652
 
Portfolio turnover
 rate....................     10%      6%     13%      8%      5%      5%      3%      8%      7%     12%
<FN>
 
- ---------------------
*    Year ended February 29.
+    Does not reflect the deduction of sales charge.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
                                       40
<PAGE>
DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND BOARD OF DIRECTORS
OF DEAN WITTER DIVIDEND GROWTH SECURITIES INC.
 
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations and of
changes in net assets and the financial highlights present fairly, in all
material respects, the financial position of Dean Witter Dividend Growth
Securities Inc. (the "Fund") at February 29, 1996, the results of its operations
for the year then ended, the changes in its net assets for each of the two years
in the period then ended and the financial highlights for each of the ten years
in the period then ended, in conformity with generally accepted accounting
principles. These financial statements and financial highlights (hereafter
referred to as "financial statements") are the responsibility of the Fund's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these financial
statements in accordance with generally accepted auditing standards which
require that we plan and perform the audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation. We believe that our audits, which included
confirmation of securities owned at February 29, 1996 by correspondence with the
custodian, provide a reasonable basis for the opinion expressed above.
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
APRIL 12, 1996
 
- --------------------------------------------------------------------------------
                      1996 FEDERAL TAX NOTICE (UNAUDITED)
 
       During  the year  ended February  29, 1996,  the Fund  paid to its
       shareholders $0.09  per share  from long-term  capital gains.  For
       such  period, 100% of the income  paid qualified for the dividends
       received deduction available to corporations.
 
                                       41


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